UNIVERSITY OF MAIDUGURI Maiduguri, Nigeria CENTRE FOR DISTANCE LEARNING SOCIAL SCIENCES ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY ANT 201: UNIT: 2 INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 ii CDL, University of Maiduguri, Maiduguri ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY Published UNIT: 2 2008© All rights reserved. No part of this work may be reproduced in any form, by mimeograph or any other means without prior permission in writing from the University of Maiduguri. This text forms part of the learning package for the academic programme of the Centre for Distance Learning, University of Maiduguri. Further enquiries should be directed to the: Coordinator Centre for Distance Learning University of Maiduguri P. M. B. 1069 Maiduguri, Nigeria. This text is being published by the authority of the Senate, University of Maiduguri, Maiduguri – Nigeria. ISBN: 978-8133- iii CDL, University of Maiduguri, Maiduguri ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 P R E FA C E This study unit has been prepared for learners so that they can do most of the study on their own. The structure of the study unit is different from that of conventional textbook. The course writers have made efforts to make the study material rich enough but learners need to do some extra reading for further enrichment of the knowledge required. The learners are expected to make best use of library facilities and where feasible, use the Internet. References are provided to guide the selection of reading materials required. The University expresses its profound gratitude to our course writers and editors for making this possible. Their efforts iv CDL, University of Maiduguri, Maiduguri ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY will no doubt help in improving access to UNIT: 2 University education. Professor J. D. Amin Vice-Chancellor v CDL, University of Maiduguri, Maiduguri ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 HOW TO STUDY THE UNIT You are welcome to this study Unit. The unit is arranged to simplify your study. In each topic of the unit, we have introduction, objectives, in-text, summary and selfassessment exercise. The study unit should be 6-8 hours to complete. Tutors will be available at designated contact centers for tutorial. The center expects you to plan your work well. Should you wish to read further you could supplement the study with more information from the list of references and suggested readings available in the study unit. PRACTICE EXERCISES/TESTS 1. Self-Assessment Exercises (SAES) This is provided at the end of each topic. The exercise can help you to assess whether or not you have actually studied and understood the topic. Solutions to the exercises are provided at the end of the study unit for you to assess yourself. 2. Tutor-Marked Assignment (TMA) vi CDL, University of Maiduguri, Maiduguri ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 This is provided at the end of the study Unit. It is a form of examination type questions for you to answer and send to the center. You are expected to work on your own in responding to the assignments. The TMA forms part of your continuous assessment (C.A.) scores, which will be marked and returned to you. In addition, you will also write an end of Semester Examination, which will be added to your TMA scores. Finally, the center wishes you success as you go through the different units of your study. vii CDL, University of Maiduguri, Maiduguri ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 INTRODUCTION TO THE COURSE Anthropology is the study of humankind. The anthropologist is concerned primarily with a single species-HOMO-SAPIENS the human species, its ancestors, and near relatives. Because the anthropologist is a member of the same species that is being studied, it is difficult, if not impossible to be completely objective in this pursuit. However, anthropologists have found that the use of the scientific approach produces useful generalizations about human behaviour. With the scientific approach, anthropologists are better able to arrive at a realistic and unbiased understanding of human diversity. CDL, University of Maiduguri, Maiduguri - Nigeria 1 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 ANT 201: PHYSICAL INTRODUCTION TO ANTHROPOLOGY_UNIT: 2 TA B LE O F C O N TE N T S PAGES PREFACE - - - - - - - - HOW TO STUDY THE UNIT - - - - - - - - - - - - - iii - iv INTRODUCTION TO THE COURSE 1 TOPIC: 1: - 3 2: THE STUDY OF ANTHROPOLOGY INTRODUCTION TO PHYSICAL ANTHROPOLOGY 3: ESSENTIALS 10 THE EMERGENCE OF CULTURAL - 15 CDL, University of Maiduguri, Maiduguri - Nigeria 2 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 4: VARIATION IN MODERN HOMOSAPIENS - - 20 SOLUTIONS TO EXERCISES CDL, University of Maiduguri, Maiduguri - Nigeria 3 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 TOPIC 1: TA B LE O F C O N TE N T S PAGES 1.0 TOPIC: THE STUDY OF ANTHROPOLOGY - - 3 1.1 INTRODUCTION - - - - - - - 4 1.2 OBJECTIVES - - - - - - - 4 1.3 IN-TEXT - - - - - - - 4 1.3.1 THE PRACTICE OF ANTHROPOLOGY - - 4 1.3.2 EXPLANATION OF SOME BASIC CONCEPTS IN - ANTHROPOLOGY - - - - - 4 1.4 SUMMARY - - - - - - 8 1.5 SELF-ASSESSMENT EXERCISE - - - - - 8 1.6 REFERENCES - - - - - - 9 1.7 SUGGESTED READINGS - - - - - 9 - - - CDL, University of Maiduguri, Maiduguri - Nigeria 4 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY 1.0 TOPIC: UNIT: 2 THE STUDY OF ANTHROPOLOGY 1.1 INTRODUCTION Anthropology is the study of humankind. The anthropologist is concerned primarily with a single species-HOMO-SAPIENS the human species, its ancestors, and near relatives. Because the anthropologist is a member of the same species that is being studied, it is difficult, if not impossible to be completely objective in this pursuit. However, anthropologists have found that the use of the scientific approach produces useful generalizations about human behaviour. With the scientific approach, anthropologists are better able to arrive at a realistic and unbiased understanding of human diversity. 1.2 OBJECTIVES At the end of this topic you should be able to i. Explain the importance of ethnography in anthropological study. ii. Describe all the key terms within the broad concepts of culture and functionalism 1.3 IN-TEXT 1.3.1 DEFINITION OF ANTHROPOLOGY Anthropology is defined as the study of human communalities and differences and expressly includes the entire temporal and geographic range of human kind in its scope. The devotion of anthropology to the study of all peoples regardless of where and when they lived has cast more light on the human nature. 1.3.2 PRACTICES OF ANTHROPOLOGY The discipline of anthropology may be divided into two fundamental areas, namely as follows physical and cultural anthropology. (1) PHYSICAL ANTHROPOLOGY Physical Anthropology is that aspect of anthropology which is primarily concerned with humans as biological organisms. The physical anthropologist applies knowledge of genetics and biochemistry to achieve a fuller understanding of human variation and evolution. Physical anthropologist lays the foundation for the study of humans as cultural animals, which is the branch of anthropology known as CDL, University of Maiduguri, Maiduguri - Nigeria 5 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 Cultural Anthropology. Cultural Anthropology is divided in to specific fields of Archeology, Linguistics and Ethnology. Although each of these areas has its own special interests, all deal with cultural data. (2) ARCHEOLOGY Archaeology is the branch of cultural anthropology concerned with the study of material objects as a means of describing and explaining human behaviour. For the most part, it focuses on the material aspects of the human past because material objects rather than ideas are often what survives of the human past. The archeologist studies the tools, pottery and other enduring relics that remains as the legacy, of extinct cultures. (3) ETHNOLOGY While the archaeologist studies cultures of the past, the ethnologist concentrates on cultures of the present. While the archeologist focuses on the study of material objects to learn about human behavior the ethnologist concentrates on the observation of human behavior as it can be seen and discussed with those whose culture is to be understood. In other word; ethnologist are primarily concerned with cultures as they can be observed in action. (4) LINGUISTICS The branch of cultural anthropology that studies human languages is called linguistics. Perhaps the most distinctive human feature is the ability to speak. Linguistics may deal with the description of a language (the way it forms a sentence or conjugates a verb) or with the history of languages - the way languages develop and influence each other with the passage of time. Ultimately it is languages that allow people to preserve and transmit their culture from generation to generation. 1.3.3 EXPLANATION OF SOME BASIC CONCEPTS IN ANTHROPOLOGY In anthropology like in other disciplines we use many concepts to describe the subject matter we deal with. In this topic you will be introduced to only some basic concepts in anthropology. We shall be studying the following sub-topics. I. Ethnography. II. Culture concept. III. Functionalism Within each of these sub-topics, which are themselves concepts in anthropology we shall learn quite a number of concepts that are basic concepts in the discipline of anthropology in addition to learning about these broad sub-topics. CDL, University of Maiduguri, Maiduguri - Nigeria 6 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY 1.3.3.1 UNIT: 2 Ethnography Fundamental to the ethnologist’s approach is ethnography or field work. It has been observed with some validity that the ethnographer is an archeologist who catches his archeology alive. Whenever possible the ethnologist becomes an ethnographer by going out to live among the people under study, eating their food, speaking their language e.t.c. participating in their social activities such as marriage and death ceremony etc. CDL, University of Maiduguri, Maiduguri - Nigeria 7 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY 1.3.3.2 UNIT: 2 Participant Observation The anthropologist studying a group of people, must be meticulous observer in order to be able to get a broad overview of a culture without placing undue stress on any of its components parts. Only by discovering how all social institutionspolitical, economic, and religious-fit together can the ethnographer begin to understand the culture system. The popular image of ethnographic field-work is that it takes place among far-off, exotic people. 1.3.3.3 The Concept of Culture The concept of culture was first developed by Sir Edward Burnett Taylor, a British anthropologist in 1871, he defined culture as, “that complex whole which includes knowledge, belief, art, law, morals, custom and any other capabilities and habits acquired by man as a member of society”. One problem with the definition is that it treats ideas and objects as equivalent. Recent definitions tend to put less stress on tangible things and behaviour, and more on abstract values and beliefs that lie behind observable things and behaviour. To put it another way, culture is not observable behavior but rather the values and beliefs which lie behind that behavior and which it reflects. 1.3.3.4 Modern Definition of Culture Culture is a set of rules or standards which when acted upon by the members of a society produce behaviour that falls within a range or variance the members consider proper and acceptable. 1.3.3.5 Characteristics of Culture. Culture as a way of life of a group of people has many characteristics. The characteristics of culture are as follows: i. Culture is shared Culture is a set of shared ideals, values, and standards of behavior; it is the common denominator that makes the actions of individuals intelligible to the group. ii. Culture is Learned All culture is learned, not biologically inherited. One learns one’s culture by growing up in it. Ralph Linton referred to culture as humanity’s “social heredity”. The process whereby a culture is transmitted from one generation to the next is called enculturation. iii. Culture is Symbolic CDL, University of Maiduguri, Maiduguri - Nigeria 8 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 Leslie White, an American anthropologist, considered that all human behavior originates in the use of symbols. Art, religion and money involve the use of symbols. The most important symbolic aspect of culture is language which is the substitution of words for objects. CDL, University of Maiduguri, Maiduguri - Nigeria 9 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY iv. UNIT: 2 Culture is Integrated The tendency for all aspects of a culture such as economic, political and the social to function as an interrelated whole is called integration. 1.3.3.6 Functions of Culture i. ii. iii. iv. v. vi. A Culture must provide for the production and distribution of goods and services necessary for life. It must provide for biological continuity through the reproduction of its members. It must acculturate new members so that they can become functioning adults. It must maintain order between its members and outsiders. It must motivate its members to survive and engage in those activities necessary for survival. Theories about cultures and society: a. Evolution b. Diffusionism. a) Evolutionism The theory of evolutionism assumes that complex societies develop out of simple ones. Some evolutionists argue that the so called primitive societies that still exist today are survivals from the past. Max Muller and Mac Lennan were among the earliest. b) Diffusionism The theory of diffusionism scholars attacked the evolutionists and argued that evolution alone cannot account for all the difference between the primitive or small scale societies.they became interested n the distribution of cultural traits and elements which means they hoped to find out how cultural traits have diffused from a common origin or origins. The diffusionists argued that all cultural traits were originally developed in Egypt and subsequently spread through out the world in waves of emigration. The diffusionists were condemned mainly for atomizing culture into elements. One of the best known early diffusionists was F.F.Graebner. 1.3.3.7 Functionalism An important school of anthropology which arose in opposition to the extreme evolutionist and diffusionist positions was known as functionalism. The functionalists looked to contemporary cultures rather than to history as a means of studying the role of specific cultural traits in maintaining a social system. Functionalism has two different approaches put forward by two different theoreticians CDL, University of Maiduguri, Maiduguri - Nigeria 10 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY 1. UNIT: 2 A. R. RADCLIFFE-BROWN One of the major theoreticians of the functionalist school was the British anthropologist Radcliffe-Brown. The approach of Radcliffe-Brown and his followers is referred to as Structural Functionalism to distinguish it from the approach of another functionalist Bronislaw Malinowski. The structural functionalists maintained that each custom and belief of a society has a specific function that serves to perpetuate the structure of that society. i.e. its ordered arrangement of parts- so that the society’s continued existence is possible. 2. BROWNISLAW MALINOWSKI Another major theoretician of the functionalist school was the polish-born anthropologist Brownislaw Malinowski. Malinowski argued that people every where share certain biological and psychological needs and that the ultimate function of all the cultural institutions is to fulfill those needs .The nature of the institution according to Malinowski, is determined by its function. Malinowski outlined three fundamental levels of needs which he claimed had to be resolved by all cultures. The needs are as follows: 1. A culture must provide for biological needs such as the need for food and procreation. 2. A culture must provide for instrumental needs, such as the need for law and education. 3. A culture must provide for integrative needs such as religion and art. The functionalist approach laid good foundation for ethnographic as well as methods of scientific observation. 1.4 SUMMARY Anthropology is the systematic study of human kind. In employing a scientific approach anthropologists seek to produce useful generalizations about human behaviour and to arrive at an unbiased understanding of human diversity. Three areas within cultural anthropology are archeology, which studies material objects to explain human behavior, linguistics, which studied languages, and ethnology, which focuses on human behavior as it can be observed in action. Culture is the way of life of a society, and it has to do with all learned behavior passed on, from one generation to another. The functionalist, in opposition to the evolutionists and diffusionists, looked to contemporary cultures rather than to history as a means of studying the role of specific cultural traits in maintaining a social system. 1.5 SELF-ASSESSMENT EXERCISE CDL, University of Maiduguri, Maiduguri - Nigeria 11 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY (1) (2) (3) UNIT: 2 Why is ethnography very important to the study of anthropology? State the functions of culture. Differentiate between structural-functionalism and functionalism. CDL, University of Maiduguri, Maiduguri - Nigeria 12 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 1.6 REFERENCES Fried Mortion H. The Study of Anthropology New York. Crowell 1972 Good enough, Ward H. Description and Comparison in Cultural Anthropology Chicago Aldine, 1970 Voget, Fred W.A.A History of Ethnology New York; Holt Rineheart and Winston, 1975 Keesing Roger. M. Cultural anthropology. A contemporary perspectives New York Holt Rineheart and Winston 1976. 1.7 SUGGESTED READING Fried Mortion H. The Study of Anthropology New York. Crowell 1972 Voget, Fred W.A.A History of Ethnology New York; Holt Rineheart and Winston, 1975. CDL, University of Maiduguri, Maiduguri - Nigeria 13 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 TOPIC 2: TA B LE O F C O N TE N T S PAGES 2.0 TOPIC: INTRODUCTION TO PHYSICAL ANTHROPOLOGY - - - - 10 2.1 INTRODUCTION - - - - - - - 11 2.2 OBJECTIVES - - - - - - - 11 2.3 IN TEXT - - - - - - - 11 2.3.1 DEFINTION OF PHYSICAL ANTHROPOLOGY - 11 2.3.2 HUMAN EVOLUTIONARY CONTEXT - 11 - - 2.3.3 ANATOMICAL FEATURES AND CHARATERRITICS OF THE PRIMATES - - - - - 12 2.3.4 HUMAN ANACESTORS - - - - - 12 2.3.5 A AFRICANUS, A ROBUSTUS AND A BOISE- - 12 2.4 SUMMARY - - - - - - 13 2.5 SELF ASSESMENT EXERCISE - - - - - 13 2.6 REFERENCES - - - - - 13 2.7 SUGESTTED READINGS - - - - - 14 - - - - CDL, University of Maiduguri, Maiduguri - Nigeria 14 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY 2.0 TOPIC: UNIT: 2 INTRODUCTION TO PHYSICAL ANTHROPOLOGY 2.1 INTRODUCTION Humans as Animals. Human beings are not separate from nature or even in nature. Rather we are of nature one among millions of species. Part of the task of Anthropology is understanding the human species in relation to the rest of the animal kingdom and identifying the continuities and discontinuities between ourselves and other animals. In what ways are we like other animals and what is it that makes us specifically humans? 2.2 OBJECTIVES At the end of this topic, you should be able to: i. Define physical anthropology and differentiate it from other aspects of anthropology. ii. Explain the evolutionary process, that is, how humans developed as they did. iii. Define the following concepts which are relevant to the study of physical anthropology e.g. Fossils, Primates. 2.3 IN-TEXT 2.3.1 Definition of Physical Anthropology Physical Anthropology is that aspect of Anthropology which is primarily concerned with humans as biological organisms. Physical Anthropologists study the biology of both modern human populations and their fossil remains. 2.3.2 Human In Evolutionary Context Anthropology includes the study of primates other than humans ,in order to explain why and how humans developed as they did. One might properly question the value of studying primates other than humans when it is humans and their distinctive cultural capacities that concerns us. But humans did not start out as cultural beings. Indeed, some evolutionists think that they did not even start out as humans. Their roots like those of the other living primates lie in ancient time and in less specialized biological creatures. Their development was influenced by the same evolutionary processes. It is believed CDL, University of Maiduguri, Maiduguri - Nigeria 15 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 therefore that studying the environment of those times, the anatomical features which evolved in response to that environment, and the rudimentary cultural adaptations of those primates who share in the human ancestral heritage, we will draw closer to an understanding of how humans developed as they did. CDL, University of Maiduguri, Maiduguri - Nigeria 16 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY 2.3.3 UNIT: 2 ENVIRONMENT The primates emerged during a period when the earth was undergoing radical changes .The geographical changes favoured the distribution of forest grasslands and deserts. A new wild climate favoured the spread of dense tropical and sub tropical forests over much of the earth. This led to an increase in the numbers and spread of grasses, ivies, shrubs and other flowering plants such as the trees that are found in the forests. Forestation set the stage for the evolutionary development from the rodent like ground existence to tree living. Forests also provided our early ancestors with new ecological niches, or functional positions in their habitats. The way in which early primates anatomically adapted has considerable relevance for humans, their close relatives. 2.3.4 Anatomical Features and Characteristics of the Primates The primates order includes the lower primates-tarsiers, lemurs and tree shrews; while the higher primates are new and old world monkeys anthropoid apes and humans. As the early primates became tree dwelling, various modifications took place in dental characteristics sense organs, the brain, and skeletal structure that helped them to adapt to their environment. Learned social behavior particularly in gorillas and chimpanzees also aided survival in an arboreal environment. Arboreal means dwelling on the top of trees. Chimpanzees live in structured social groups and express their sociability through communication on by visual and vocal signals. They also exhibit an ability to learn from experience and can make and use tools. Gorillas also live and travel in groups and communicate visually and by calling. 2.3.5 HUMAN ANCESTORS It is believed that all of the physical and cultural changes that took place in the early hominids came at about the same time through a process of mutual reinforcement. There are two types of known human ancestors, they are namely as follows: 1. Ramapithecus and 2. Australopithecus. 1. Ramapithecus is regarded as the earliest member of the human family on the basis of its jaw structure and dentition and is believed to have exhibited a rudimentary bipedal locomotion so that its hands were freed for other uses. 2. Australopithecus known from many fossil remains was more human in appearance and in physiological characteristics. CDL, University of Maiduguri, Maiduguri - Nigeria 17 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY 2.3.6 UNIT: 2 A AFRICANUS, A ROBUSTUS AND A BOISE Most anthropologists divided the Australopithecus into three distinct species, namely; A africanus, A robustus, and A boise. A africanus, had large jaws relative to its brain case , A Robustus have a large brain case relative to its jaws. This hominid, fully bipedal and able to run erect, was well equipped for generalized food gathering in the savannah environment. A Boise, Super Robust species, differ from the former in superficial respects such as heavier and more robust physical frame. It is of major significance that some kinds of Australopithecus were meat eaters and tool makers. The inclusion of meat in the diet provided a kind of nutrition that could support a larger brain, once it evolved. Tool making which depended on fine manipulation of the hands and hunting which required analytical thinking put a premium on a more sophisticated nervous system which will play a part in the evolution of a more developed brain. 2.4 SUMMARY Physical anthropology includes the study of primates other than humans in order to explain why and how humans developed as they did. As the early primates became tree dwelling, various modifications took place in their physiological characteristics. Learned social behavior, particularly in gorillas and chimpanzees, also aided survival in an arboreal environment. All of the physical and cultural changes that took place in the early hominids came at about the same time through a process of mutual reinforcement. Ramapithecus is regarded as the earliest human ancestor, on the basis of its jaw structure, dentition and rudimentary bipedal locomotion. Australopithecus another early human ancestor, was more human in appearance. Australopithecus was of three types the A. africanus, the A robustus and the A boise. 2.5 SELF-ASSESSMENT EXERCISE (1) (2) (3) Mention the human ancestors you know and discuss their anatomical features. Discuss the influence of the environment on the evolutionary process of primates Define the following concepts which are relevant to the study of physical anthropology, e.g. a) Fossils b)Primates c) Bipedal Locomotion and d) Hominids. 2.6 REFERENCE Hester, James J. Introduction to Archaeology, New York. Holt, Rineheart and Winston. 1976 CDL, University of Maiduguri, Maiduguri - Nigeria 18 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 Jolly, Alison, The Evolution Of Primate Behaviour, New York; Macmillam 1972 Lasker Gabriel .W. Physical Anthropology 2nd ed New York; Holt, Rineheart and Winston, 1976 Constable George and the editions of life. The Neaderthals New York. Time-life Books 1973. 2.7 SUGGESTED READINGS Lasker Gabriel .W. Physical Anthropology 2nd ed New York; Holt, Rineheart and Winston, 1976 Brace, C. Loring, Harry Nelson, and Neol Korn. Atlas of Fossil Man, New York; Holt, Rineheart and Winston 1971. CDL, University of Maiduguri, Maiduguri - Nigeria 19 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 TOPIC 3: TA B LE O F C O N TE N T S PAGES 3.0 TOPIC: THE EMERGENCE OF CULTURAL ESSENTIALS 15 3.1 INTRODUCTION - - - - - - 16 3.2 OBJECTIVES - - - - - - 16 3.3 IN-TEXT - - - - - - 16 3.3.1 HOMO HABILIS - - - - - - 16 3.3.2 HOMO ERETUS - - - - - - 17 - - - - - 17 3.3.4 NEANDERTHALS - - - - - - 18 3.3.3.2 - - - - - 18 - 3.3.3 - HOMO SAPIANS CRO MAGNANS 3.4 SUMMARY - - - - - - 18 3.5 SELF ASSESMENT EXERCISE - - - - 19 3.6 REFERENCES - - - - 19 3.7 SUGESTTED READINGS - - - - 19 - - CDL, University of Maiduguri, Maiduguri - Nigeria 20 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 CDL, University of Maiduguri, Maiduguri - Nigeria 21 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY 3.0 TOPIC: UNIT: 2 THE EMERGENCE OF CULTURAL ESSENTAIALS 3.1 INTRODUCTION With the emergence of the genus, HOMO, culture became a major force in human evolution by imposing its own selective pressures. Moreover, culture itself evolved slowly at first but with increasing rapidity, so that evolution was no longer a matter of biological change alone. Anthropologists have divided the evolving Homo Lineage into three successive species, namely as follows (i) HOMO-HABILIS (ii) HOMO-ERECTUS (iii) HOMO-SAPIENS. 3.2 OBJECTIVES At the end of this topic, you should be able to: i. To know the types of HOMO lineage. ii. To be able to explain the physical and cultural variations of the HOMOs. iii. Be able to define the concepts relevant to the study of Physical Anthropology. The concepts are as follows: a. Evolution means gradual changes in a species. b. Bipedal means walking on two feet. c. Australopithecus means a close relative of the human species who lived a million years ago. d. Ecology means the study of the interrelationships of organisms and their environment. e. Fossils are the preserved remains of plants and animals that lived in the past. f. Anthropoid are higher Primates, Monkeys, Apes and humans. g. Arboreal means tree dwelling or dwelling on the tree. h. Hominid means a member of the family of humans. i. Anatomy means the scientific study of the structure of human and animal bodies. j. Adaptation means the process of adjustments of a species to a specific environment; or a particular trait that makes species more suited to and successful in its environment. 3.3 IN-TEXT 3.3.1 HOMO HABILIS CDL, University of Maiduguri, Maiduguri - Nigeria 22 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 The earliest recognized species of HOMO, is HOMO HABILIS whose known remains date back as far as 2 million years ago. The most distinctive feature of HOMO HABILIS compared with Australopithecus, is its larger brain case strongly suggesting a greater degree of intelligence. The development of tools for example made HOMO HABILIS a more accomplished hunter and gatherer. Greater dependence on this way of life in turn created selective pressure for more efficient bipedalism. At the same time larger brains and more dexterous hands made possible the planning and production of better tools. Culture had entered our ancestors adaptive pattern and as time went by, it became an increasing important part of the pattern. 3.3.2 HOMO ERECTUS The next figure in human evolution was been designated Homo erectus. No previous hominids were as widespread as Homo erectus whose remains have been found in Asia up into China, Europe and Africa. In spite of this broad distribution, the fossils reveal no more significance physical variations than are seen in modern human population. Fossils indicate that Homo erectus had a larger brain than Australopithecus one which was within the lower range of modern brain size. The dentition was fully human, though large by modern standard. The leg and foot bones indicate that bipedal locomotion was improved over Australopithecus and that Homo erectus could probably walk and run as well as modern people. Homo erectus developed culture as one might expect given the larger brain. Homo erectus had outstripped its predecessors in cultural development. From sites in China and Europe, we have the first clear evidence for the use of fire for protection, warmth and cooking. For example at Choukoutien a fossil site about 30 miles from peking, thousands of broken and charred bones of deer, sheep, antelope, roebuck, small hares, camels, bison and elephants indicate that homo erectus was accomplished hunter who cooked food. It is likely that Homo erectus used fire that originally started by lighting or through spontaneous Combustion rather than by instruments developed for kindling fire. But the use of fire itself represents a very significant step in human cultural adaptation. It may have influenced the forces of natural selection which previously favored individuals with heavy jaws and large, sharp teeth (needed for chewing and ripping uncooked meat) thus paving the way for reduction in tooth size as well as supportive facial architecture. Like tools and intelligence, fire gave people more control over their environment. The technological efficiency of Homo erectus is evidenced in a refined tool making, with the development of the hand axe and, later specialized tools for hunting, butchering, food processing, hide scraping and defense. Efficiency in technology and improvement in hunting techniques, in language and communication reflected a considerable advance in organizational ability. CDL, University of Maiduguri, Maiduguri - Nigeria 23 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY 3.3.3 UNIT: 2 HOMO SAPIENS 3.3.3.1 NEANDERTHALS The fossils remains of the Homo sapiens dating back 200,000 years was discovered in the 1930s and 1940s. The most outstanding characteristic of these new humans was apparently a larger brain well within the range of modern human brain size. A probable descendant of this primitive Homo sapiens population is Neanderthals. There are two types of Neanderthals: Classic and Generalized. The Classic was so called because it was the first type to be found. Classic Neanderthal was typically heavier and lived in Europe. The Generalized type was lighter and more modern in form and facial features and lived in the Near East. Apparently, several local varieties of Neanderthals were in existence within which there was a good deal of individual variation. Adaptation to the environment for the Neanderthals were of course both physical and cultural. Neanderthals extensive use of fire was essential to survival in an arctic climate like that of Europe at the time. They lived in small bands or single family units both in the open and in caves and undoubtedly communicated by speech. Remains indicate that they believed in some form of after life and that religious belief played a part in their lives. 3.3.4 CRO-MAGNONS In what is called upper Paleolithic times about 35,000-40,000 years ago, the Neanderthals were replaced by people who possessed a physical appearance similar to ours. These people who were true Homo sapiens are usually called Cro-Magnons. Cro-Magnons remains revealed considerable physical variability as one might expect from any human population. Generally speaking however, these people had characteristically modern looking faces. At this time in human evolution culture has become a more potent force than biology, people no longer require physical bulk for survival. Fast technological developments had contributed to the increasing complexity of the brain by the time of the Neanderthals and this complexity now enabled people to create an even more sophisticated technology. One important aspect of Cro-Magnon culture in the west is the art of this period. The Cro-Magnon level of artistic proficiency is certainly amazing, humans had not produced art work of this caliber before this time. Tools and weapons were decorated with engravings of animal figures, pendants, made of bone and ivory were created; and there was sculpting in clay. More spectacular and quiet unlike anything undertaken by the earlier Neanderthals, are the cave paintings in Spain and France. Apart from decorative function these paintings served a religio-magical function, which attest to a highly sophisticated aesthetic sensibility. CDL, University of Maiduguri, Maiduguri - Nigeria 24 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 3.4 SUMMARY There are three types of Homo, namely as follows (1) Homo habilis (2) Homo erectus (3) and Homo Sapiens. Homo habilis the earliest known human species, had lager brain case strongly suggesting a greater degree of intelligence. Homo habilis was probably the first systematic hunter-gatherer and extensive stone tool maker Homo erectus the human species that flourished from about 1.5 million to 300,000 years ago. Homo erectus had certain unique characteristics, including a very thick, large brain case and a moderate teeth; but its skeleton was functionally modern. Homo erectus population are generally quite similar, they do show some geographical variation. Homo sapiens are humans who lived from about 250,000 to 40,000 years ago, sufficiently advanced to be assingned to our own species. The most outstanding characteristics of these new humans were apparently a large brain well within the range of modern human brain size. There are two types of Homo sapiens namely as follows: (i) the Neanderthal who live in Europe and Near East and (ii) Cro-Magnon who lived in Western Europe. 3.5 SELF ASSESSMENT EXERCISE (1) Describe what the fossils indicate about the homo erectus. (2) Differentiate between the Neanderthals and the Cro-Magnon. (3) Briefly describe one important aspect of Cro-Magnon culture in the West. 3.6 REFERENCES White Edmund and the Editors of Life. The First Man. New York: Time-Life Books 1972. Pilbeam David, The Ascent of Man: An introduction to Human Evolution. New York Macmillan 1972. Lasker Gabriel .W. Physical Anthropology 2nd ed New York; Holt, Rineheart and Winston, 1976. Constable George and the editions of life. The Neaderthals New York. Time-life Books 1973. 3.7 SUGGESTED READINGS Brace, C. Loring, Harry Nelson, and Neol Korn. Atlas of Fossil Man, New York; Holt, Rineheart and Winston 1971. Lasker Gabriel .W. Physical Anthropology 2nd ed New York; Holt, Rineheart and Winston, 1976. Lawick-Goodall, Jane Van. In the Shadow of Man, New York Dell, 1972. CDL, University of Maiduguri, Maiduguri - Nigeria 25 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 CDL, University of Maiduguri, Maiduguri - Nigeria 26 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 TOPIC 4: TA B LE O F C O N TE N T S PAGES 4.0 TOPIC: VARIATION IN MORDERN HOMO SAPIANS 20 4.1 INTRODUCTION - - - - - - 21 4.2 OBJECTIVES - - - - - - 21 4.3 IN TEXT - - - - - - 21 4.3.1 FACTORS EXPLAINIG HUMAN VARIATION - 21 - 4.4 SUMMARY - - - - - - 22 4.5 SELF ASSESMENT EXERCISE - - - - 22 4.6 REFERENCES - - - - 23 4.7 SUGESTTED READINGS - - - - 23 - - - CDL, University of Maiduguri, Maiduguri - Nigeria 27 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY 4.0 TOPIC: UNIT: 2 VARIATION IN MODERN HOMO SAPIENS 4.1 INTRODUCTION Studying human variation Human beings belong to a single species, so they have many more similarities than differences. Nevertheless, the degree of physical variation in modern Homo-sapiens is very great. Humans display a high degree of polymorphism, or genetically determined variety within populations. More over, the species is decidedly polytypic, with many differences among population. Some of these variations are continuous, appearing as smooth gradients between extremes. Others are discontinuous, dividing the species into discrete types. The most interesting variations are those that are under genetic control at least to some degree, and so are subject to evolutionary processes. 4.2 OBJECTIVES At the end of this topic, you should be able to: i. Explain human variation in terms of similarities and differences. ii. Describe where human variation are continuous and where they are discontinuous. 4.3 IN-TEXT 4.3.1 FACTORS EXPLAINIG HUMAN VARIATION 4.3.1.1 CULTURAL FACTORS To explain any pattern of variation, we must often take cultural factors into account. Unlike those of most other species, human populations are defined not only geographically but also by many cross-cutting social and cultural divisions. These subdivisions of the population may have considerable effects on genotype frequencies. Cultural adaptations have also come to play a role in the process of selection, as in the case of technologically advanced settlers who displaced native populations in many areas for example when the English settlers first set foot in North America or the Arab in east Africa, they made use of a sophisticated technology including guns to displace the native populations . Culture may also impose selective forces of its own, thus influencing biological evolution. 4.3.1.2 VARIATION IN BLOOD PROTEINS CDL, University of Maiduguri, Maiduguri - Nigeria 28 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 Some of the best-known human physical variation are found in blood proteins. A notable example involves hemoglobin, the red oxygen-carrying protein found inside red blood cells. Chemically, hemoglobin S differs only slightly from normal hemoglobin. This minute difference has massive consequences, however, people who are homozygous for the hemoglobin S allele suffer from sickle-cell anemia which can result in early death. 4.3.1.3 VARIATION RELATED TO DISEASE 1. Malaria and the sickle-cell gene Malaria is suspected to act as a maintaining force in many other polymorphisms besides sickle-cell. This reflects the fact that the malaria parasite attacks the red blood cells and blood is easily sampled. In many areas faciparum malaria is one of the leading causes of death especially among children. The close correspondence between the distribution of the gene and that of the malaria gave genetic the clue for a direct relationship between genes and environment to solve puzzles in human variability. 2. Blood Group Substance: is a set of molecules located on the surface of the red blood cells, represent perhaps the most familiar human variation that is under simple genetic control. 4.3.1.4 DIET-RELATED VARIATION Disease is not the only selective factor that might underlie many forms of human physical variation. What a population eats may be as important an influence on its gene pool as what viruses and bacteria it has to contend with. Differences in diet have probably played an important role in creating variation in the digestive enzymes-those proteins that make it possible for the body to break down food chemically. After all there is a saying that what you eat is you. 4.4 SUMMARY Human beings belong to a single species, so they have many more similarities than differences. The degree of physical variation in modern HOMO SAPIENS are caused by many factors, such as (1) Cultural factors – human population are defined not only geographically but also by many crosscutting social and cultural division. (2) Blood factors – some of the best known human physical variation are found in blood proteins. (3) Variation Related to Disease- Malaria and the sickle-cell gene affects the physical variation of the people. (4) Diet-Related Variation Factors- what a population eats may be as important an influence on its gene pool as what viruses and bacteria it has to contend with. Diet play a big role in human variation. CDL, University of Maiduguri, Maiduguri - Nigeria 29 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 4.5 SELF-ASSESSMENT EXERCISE (1) (2) (3) Explain the role of diet related factor in human variation. Describe the role of cultural factors in human variation. How do blood proteins contribute in physical human variation? 4.6 REFERENCES Principles of Human of Genetics 3rd ed. San Francisco W.H. Free man Blood Groups in Man, Race R.R. and Sanger R. Philadelphia 1975 Principles of Human Biochemical Genetics 2nd rev. ed New York Elsevier, Harris H 1975 4.7 SUGGESTED READING Blood Group in Man. 6th ed Philadelphia Lippincott Race R.R and Sanger R 1975. CDL, University of Maiduguri, Maiduguri - Nigeria 30 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 SOLUTIONS TO EXERCISES TOPIC 1: The study of Anthropology. Question 1: Why is ethnography very important to the study of anthropology? Answer: Ethnography is important to the study of anthropology because the ethnographer tries to get first class information and data of the people he or she is studying. Usually ethnographers spend prolonged periods living with the people they study, by eating their habits and customs, the ethnographer is able to understand a society’s way of life to a far greater extent than any “armchair anthropologist” ever could; one learns a culture best by learning how to behave and acceptable in the society in which one is doing field work. Question 2: State the functions of culture. Answer: The functions of cultures are as follows: 1. A culture must provide for the production and distribution of goods and services necessary for life. 2. It must provide for biological continuity through the reproduction of its members. 3. It must acculturate new members so that they can become functioning adults. 4. It must maintain order among its members. 5. It must likewise maintain order between its members and outsiders. 6. It must motivate its members to service and engage in those activities necessary for survival. Question 3: Differentiate between Structural Functionalism and Functionalism. Answer: The difference between Structural Functionalism and Functionalism is that Structural Functionalism maintained that each custom and belief of a society has specific function that serves to perpetuate the structure of that society - its ordered arrangement of parts so that the society’s continued existence is possible. The work of the anthropologist then was to study the way in which customs and beliefs function to solve the problem of maintaining the system. To the Structural Functionalist, ceremonies serve to regulate individual conduct and promote a feeling of solidarity among the members of a group. According to this view, the significance of a revivalist meeting CDL, University of Maiduguri, Maiduguri - Nigeria 31 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 for example lies in the fact that it serves to bring people together, its religious value is secondary. Functionalism maintained that people everywhere share certain biological and psychological needs and that the ultimate function of all cultural institutions is to fulfill those needs. The nature of the institution is determined by its function. There are three fundamental levels of needs which must be resolved by all cultures. Those needs are as follows: i. A culture must provide for biological needs such as the need or food and procreation. ii. A culture must provide for instrumental needs such as the need for Law and Education. iii. A culture must provide for integrative needs such as religion and art. TOPIC 2: Introduction to Physical Anthropology. Question 1: Mention the human ancestors you know and discuss their anatomical features. Answer: There are two types of human ancestors, namely as follows: I. Ramapithecus. II. Australopithecus. Ramapithecus is regarded as the earliest member of the human family on the basis of its jaw structure and dentition and is believed to have exhibited a rudimentary bipedal locomotion, so that its hands were freed for other uses. The second known human ancestor is the Australopithecus. Australopithecus known from many fossil remains was more human in appearance and in physiological characteristics. There are three species of Australopithecus namely as follows: A africanus, A robustus and A boise. A africanus had larger brain case relative to it jaws. A robustus had large jaws relative to its brain case. A boisei, super robust species differ from the former in superficial respects such as heavier and more robust physical frame. QUESTION 2: Discuss the influence of the environment on the evolutionary process of the primates ANSWER: The environment influenced the evolutionary process of the primates in the following ways. Forestation set the stage for the evolutionary development from a rodent like ground existence to tree living. Forest also provide our early ancestors with new ecological niches, or functional positions in their habitats. The relatively small size of the early primates allowed them to exploit the smaller branches of CDL, University of Maiduguri, Maiduguri - Nigeria 32 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 trees; which larger and heavier competitors and predators could not follow. The access to the smaller branches also opened up an abundant new food supply. The primates were able to gather leaves, flowers, fruits, insects, birds egg etc. The move to an arboreal existence brought a combination of the problem of earth bound existence and those of flight. Animals living on the ground developed a slower-paced, more flexible relationship to the environment. The way in which early primates anatomically adapted has considerable relevance for humans, their closer relative. QUESTION 3: Define the following concepts (1) Evolution (2) Australopithecus (3) Ecology (4) Arboreal (5) Fossils (6) Bipedal (7) Hominid (8) Anatomy (9) Adaptation (10) Anthropoid. ANSWER: The definitions of the concepts are as follows: (i) Evolution means gradual change in a species. (ii) Bipedal means walking on two feet (iii) Australopithecus means a close relative of the human species who lived millions of years ago. (iv) Ecology means the study of the interrelationships of organisms and their environment. (v) Fossils means the preserved remains of plants and animals that lived in the past (vi) Anthropoid: higher primates, monkeys, apes and humans. (vii) Arboreal means tree dwelling or dwelling on the tree. (viii) Hominid means A member of the family of humans. (ix) Anatomy: means the scientific study of the structure of human and animal bodies. (x) Adaptation: means the process of adjustment of a species to a specific environment; or a particular trait that makes species more suited to and successful in its environment. TOPIC 3: THE EMERGENCE OF CULTURAL ESSENTIALS. QUESTION 1: Describe what the fossils indicated about the Homo erectus. ANSWERS: Fossils indicate that Homo erectus had a large brain than Australopithecus one that was within the lower range of modern brain size. The dentition was fully human, though large by modern standard. The leg and foot bones indicates that bipedal locomotion was CDL, University of Maiduguri, Maiduguri - Nigeria 33 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 improved over Australopithecus and that HOMO erectus could probably walk and run as well as modern people. Culture developed as one might expect given the larger brain. HOMO erectus had out stripped its predecessors in cultural development. QUESTION 2: Differentiate between the Neanderthals and the CroMagnons. ANSWER: A primitive descendant of HOMO sapiens population is Neanderthals. The most outstanding characteristic of these new human was apparently a larger brain well within the range of modern human brain size. There are two types of Neanderthals Classic and Generalized .Classic so called because this was the first type to be found. Classic Neanderthal was typically heavier and lived in Europe. The generalized type was more lighter and more modern in form and facial features and lived in the Near East. The Neanderthals were replaced by people who possessed a physical appearance similar to ours. These people who were true HOMO sapiens are usually called Cro-Magnons. Cro-Magnons remains revealed considerable physical variability as one might expect from any human population. The Cro-Magnons had characteristically modern looking faces. QUESTION 3: Briefly describe one important aspect of Cro-Magnon culture in the West. ANSWER: One important aspect of Cro-Magnon culture in the west is the art of this period. The Cro-Magnon level of the artistic proficiency is certainly amazing, humans had not produced art work of this caliber before this time. Tools and weapons were decorated with engraving of animals figures, pendants, made of bones ivory were created; and there was sculpting in clay. TOPIC 4 VARIATION IN MODERN HOMO SAPIENS QUESTION 1: Explain the role of diet related factor in human variation. ANSWER: What a population eats may be as important an influence on its gene pool as what viruses and bacteria it has to contend with. Differences in diet have probably played an important role in creating variation in the digestive enzymes- those proteins that make it possible for the body to break down food chemically. QUESTION 2: Describe the role of cultural factors in human variation. CDL, University of Maiduguri, Maiduguri - Nigeria 34 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 ANSWER: Cultural factors play important role in human physical variation. Cultural adaptations have also come to play a role in the process of selection, as in the case of technologically advanced settlers who displaced native populations in many areas for example when the English settlers first set foot in North America or the Arab in East Africa, they made use of a sophisticated technology including guns to displace the native populations. Culture may also impose selective forces of its own, thus influencing biological evolution. QUESTION 3: How does a blood protein contribute in physical human variation? ANSWER: Some of the best known human physical variations are found in the blood proteins. A notable example involves hemoglobin, the red, oxygen-carrying protein found inside red blood cells. CDL, University of Maiduguri, Maiduguri - Nigeria 35 ANT 201: INTRODUCTION TO PHYSICAL ANTHROPOLOGY UNIT: 2 TUTOR MARKED ASSIGNMENT INSTRUCTION: Answer all questions TIME ALLOWED: 3 Hours (1) State the functions of culture (2) Mention the types of Australopithecus you know and explain their anatomical features and characteristics (3) Differentiate between the Ramapithecus and the Australopithecus (4) Compare and contrast between the theories of StructuralFunctionalism and Functionalism CDL, University of Maiduguri, Maiduguri - Nigeria 36