7 - Answers - Paull BIO 212 Problem Set #7 (14 pts) Due on...

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Paull BIO 212 Problem Set #7 (14 pts) Due on March 24/25 Handout #7: extensions to Mendel, continued and human genetics 1. Feather color in budgies is determined by two different genes that affect the pigmentation of the outer feather and its core. Y-B- is green; yyB- is blue; Y-bb is yellow; and yybb is white. part 1: (2 pts) A blue budgie was crossed with a yellow budgie. Over the years, they produced 22 offspring, 5 of which were white. What are the most likely genotypes for the blue budgie and the yellow budgie? a. yyBb and Yybb b. yyBb and yybb c. yyBB and Yybb d. YyBb and YyBb e. yyBB and Yybb part 2: (1 pt) The inheritance of color in budgies in an example of what genetic phenomenon? a. incomplete dominance b. pleiotropy c. multiple alleles d. epistasis e. co-dominance Note that while this answer is consistent with the definition of epistasis in the textbook, more commonly used definitions of epistasis would not include this example, because the alleles at the B locus are not suppressing the phenotypic expression of the alleles at the Y locus but are
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7 - Answers - Paull BIO 212 Problem Set #7 (14 pts) Due on...

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