GLUE THIS PAGE DOWN INTO YOUR SCIENCE NOTEBOOK RSG: Chapter 15 Darwin’s Theory of Evolution (368-386) 1. What is evolution? (369) 2. What a theory? (369) 3. What intrigued Darwin about the plants and animals that he observed? (370) 4. How did tortoises and birds differ among the islands of the Galapagos? (371-372) 5. Lamarck’s Evolution Hypothesis (376) In the box below draw, color, and explain figure 15-2 (pg. 376) Lamarck’s Evolution Hypothesis: Lamarck proposed that ___________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ The components of Lamark’s Hypothesis: 1. Tendency toward Perfection Organisms have an ________________________ toward complexity and perfection and as a result they are ______________________ and ______________________ features that help become more fit. 2. Use and Disuse Organisms could _____________ the size and shape of their bodies by _____________ in new ways. 3. Inheritance of Acquired Traits ____________ characteristics could be ____________ According to Lamarck’s hypothesis what would happen to a bird that did not use it wings? Lamarck’s hypothesis was proven to be (correct/incorrect) RSG: Chapter 15 Darwin’s Theory of Evolution (368-386) 6. According Malthus, what would happen if the human population continued to grow unchecked? What factor limited population growth? (377) 7. Malthus said that some organisms like maple trees and oysters can produce many offspring? So why is the world not covered by these organisms? (377) 8. How are adaptations and fitness related? (380) 9. In the box below draw, label, and color figure 15-10 (379) Artificial Selection: What is heritable variation? How do humans use this today? (379) What is artificial selection? What has resulted from this process? (379) 10. Over time, natural selections results in _____________________ in the inherited characteristics of a population, which increases a species _____________________ in its environment. (381) RSG: Chapter 15 Darwin’s Theory of Evolution (368-386) 11. Darwin proposed that over long periods, _____________________ produces organisms that have different _____________________ , establish different _____________________, or occupy different habitats. (381) 12. If we look far enough back in history, we could find the common ancestor of all living things. This is known as the principle of _____________________. (382) 13. Darwin argued that living things have been _____________________ on Earth for millions of years. (382) 14. Evidence for this process could be found in the _____________________ record, the _____________________ distribution of living species, _____________________ of living things, and similarities in early development, or _____________________ (382-385) 15. What are homologous structures? Give some examples of homologous structures. (384) 16. What are vestigial organs? Give an example of some. (384) 17. Summary of Darwin’s Theory (386) Individual organisms differ; some of this _____________________ is heritable. Organisms produce more offspring that can _____________________ Because more organisms are produced than can survive, they _____________________ for limited resources Each unique organism has different advantages and disadvantages. Individuals best suited for their environment survives and _____________________. These organisms pass their heritable _____________________ to their offspring. Species alive today are _____________________ with modification from ancestral species.