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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.