Chickens can have different types of feathers. Frizzled feathers curl toward a chicken’s head. Assume that feather type is determined by a single gene and that the allele for frizzled feathers is dominant over the allele for straight feathers. In a cross between two chickens with straight feathers, what percentage of the offspring can be expected to have frizzled feathers?
Added by Mike A.
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This means their genotype must be "ss" (where "s" stands for the allele for straight feathers). When these chickens mate, they can only pass on "s" alleles to their offspring. Show more…
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Bryan V.
Use the following information. In chickens, neither the normal-feathered gene $F$ nor the frizzle-feathered gene $f$ is dominant. So chickens whose feather genes are $F F$ will have normal feathers. Chickens with $F f$ will have mildly frizzled feathers. Chickens with $f f$ will have extremely frizzled feathers. IMAGE CANNOT COPY. What percent of the offspring will have normal feathers? What percent will have mildly frizzled feathers? What percent will have extremely frizzled feathers?
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