Question

In rabbits, one enzyme (the product of a functional gene A) is needed to produce a substance required for hearing. Another enzyme (the product of a functional gene B) is needed to produce another substance required for hearing. The genes responsible for the two enzymes are not linked. Individuals homozygous for either one or both of the nonfunctional recessive alleles, a or b, are deaf. If two rabbits (both heterozygous for both genes are mated), what phenotypes and what phenotypic ratios would be expected in the progeny? a. b. This phenotypic ratio is a result of what genetic phenomenon? What phenotypic ratio would be expected if rabbits homozygous recessive for gene A and heterozygous for gene B were mated to rabbits heterozygous for both genes? c.

Answer 1

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