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1

Describe three ways in which heterozygous combinations of alleles may be expressed. Give an example of each.
2

Explain the transmission of sex-linked characteristics. Include the relative frequencies of sex-linked characteristics in females versus males, and give an example.
3

Choose two of the following sex-chromosome abnormalities: Turner syndrome, triple-X syndrome, Klinefelter’s syndrome, fragile-X syndrome. For each, describe the abnormality as well as its effects.
4

Describe each of the following principles of heredity/environment interactions, and give an example of each: range of reaction, canalization, niche picking.
5

Describe the ways in which family resemblance is used to look at the relative contributions of environment and heredity. Include the importance of shared and nonshared environments.





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