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In guinea pigs, the c gene controls coat color and has multiple alleles. The known alleles are c for albino, for cream, ct for sepia, and C for black. The dominance relationship between these alleles is as follows: cis dominant to cd is dominant to both d' and c and C is dominant to all of the other three. Suppose a guinea pig with genotype dcis crossed with one having genotype C What portion of their offspring do you expect to be black phenotype? Express your answer as a decimal. on Answer:

In the fruit fly Drosophila wing shape is controlled by an autosomal gene and curly wings (C) is dominant to straight wings (0) A true breeding curly wing strain is crossed with a true breeding straight wing strain. The F1 generation is then intercrossed to produce an F2 generation. What fraction of the progeny of the F2 generation will be heterozygous Cc? Express the answer as a decimal. Answer:

In the fruit fly Drosophila wing shape is controlled by an autosomal gene and curly wings (C) is dominant to straight wings (C). A true-breeding curly wing strain is crossed with a true breeding straight wing strain. The F1 generation is then test-crossed to the straight wing strain. What portion of the progeny of the test cross will have straight wings? Express the answer as a decimal. on Answer: