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Exam 3 Study Questions

Exam 3 Study Questions - EXAM 3 STUDY QUESTIONS(version 1 1...

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EXAM 3 STUDY QUESTIONS (version 1, 11/5/07) 1. What is the “pattern component” of Darwin’s and Wallace’s theory? What is the “process” component? What was thought about the origins of and relationship between organisms previous to Darwin and Wallace? I.e., what are the pattern and process components of the theory of special creation? 2. What is the evidence that species have changed through time? What was the “law of succession?” How is the law of succession related to transitional forms in the fossil record? 3. How did Darwin interpret the fact that species had gone extinct? In what way do vestigial traits support the view that species have changed through time? 4. Is there contemporary data that supports the proposition that today’s populations can and do change (evolve) in response to their environment? If so, provide at least one example. 5. Striking similarities exist between certain organisms but not others. What are the different types of homologies found to exist between organisms? Why do such similarities suggest that certain species are related to each other? Which of types of homologies were known to Darwin because they had been recognized and studied well before Darwin? Provide an example of a developmental homology. What do we mean by genetic homologies? Were genetic homologies known to Darwin? 6. Describe at least five homologies found at the level of cells. I.e., what do all cells have in common? [Hint: you will have to recall what you have learned about cells]. 7. What are the four main components or postulates of the process of natural selection? In the single-patient case study of tuberculosis (TB) described in your textbook, what findings were consistent with which postulates of the Darwinian model of evolution by natural selection? 8. What is the modern definition of evolution? How is adaptation related to evolution? Is evolution progressive? Why or why not? What is the evolutionary relationship between humans and chimpanzees? ----------------------------------------------------------------- 9. The Hardy-Weinberg model analyzes what happens to the frequencies of two alleles at a single genetic locus when evolutionary forces are not acting on a population. What are the assumptions that apply to a population that conforms to Hardy-Weinberg? 10. What is the Hardy-Weinberg equation? What terms represent allele frequencies and what terms represent genotype frequencies?
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11. Assume that at a given genetic locus there are two alleles, C and c, and that C is dominant.
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