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Unformatted text preview: effect of each on a normal phenotype curve. 10. List the genetic levels at which natural selection may act. 11. What is the importance of genetic variability to populations in stable and in changing habitats. 12. List the factors that reduce genetic variability in a population. 13. List the factors that generate and maintain genetic variability in a population. 14. Provide an example of a ring species and its importance in gene flow and genetic isolation. 15. Provide an example of a cline and how it may enhance genetic variability in a population. 16. Relate clines to altitudinal and latitudinal gradients. 17. How do heterozygote superiority and frequency dependent selection contribute to balanced polymorphisms. 18. Explain how environmental heterogeneity (temporal and spatial differences in habitats) may contribute to polymorphic fitness in populations....
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- Fall '09