Ch. 14 Study Guide.docx - Chapter 14 Nonadaptive Evolution...

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Chapter 14: Nonadaptive Evolution and Speciation – Study Guide 81 points total converted to 100 point scale in gradebook. Complete and submit via Ch. 14 Dropbox Define: (14 points) [POPULATION GENETICS] [GENE POOL] [ALLELE FREQUENCY] [NONADAPTIVE EVOLUTION] [GENETIC DRIFT] [FOUNDER EFFECT] [BOTTLENECK EFFECT] [GENE FLOW] [INBREEDING] [INBREEDING DEPRESSION] [HARDY-WEINBERG PRINCIPLE] [BIOLOGICAL SPECIES CONCEPT] [REPRODUCTIVE ISOLATION] [SPECIATION] Answer. 57 points 1. What is a gene pool? (1) 2. Can different populations of the same organism have different gene pools? Why or why not? (2) 3. For evolution to occur, what must happen to a population’s gene pool? (1) 4. Will a change in allele frequencies always result in a beneficial evolutionary change for the population? (1) 1. What is genetic drift? (1)
2. What are two major mechanisms of genetic drift? (2) 1) 2) 3. How are the founder effect and bottleneck effect similar? How are they different? (2) similarity - difference - 4. Why does genetic drift affect smaller populations more dramatically than larger ones? (1) 5. How can genetic diversity be increased in populations, and why is more diversity beneficial? (2) 6. Why does inbreeding have negative consequences for populations? (1) 7. Compare and contrast adaptive and nonadaptive mechanisms of evolution. (2)

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