Given that bw and hv are closely linked,which of the following phenotypic ratios can you expect to find in the F₂ generation? A)1 brown,heavy: 2 red,thin: 1 red,thin B)1 brown,thin: 2 red,thin: 1 red,heavy C)3 red,thin: 1 brown heavy D)1 brown: 1 red: 1 heavy: 1 thin

Question

Quizplus · Accepted Answer

Since bw and hv are closely linked, we can assume they are on the same chromosome and will be inherited together. In the F1 generation, we expect all individuals to be heterozygous for both bw and hv, and thus appear as red and thin. In the F2 generation, we can use a test cross to determine the possible phenotypic ratios. If we cross an F1 individual with brown and heavy traits to a homozygous recessive individual (bbhh), we can set up a Punnett square. The possible gametes for the F1 individual are B_h_ and b_h_, and the gametes for the homozygous recessive individual are b_h_. The resulting ratios are 1 brown, thin: 1 brown, heavy: 1 red, thin: 1 red, heavy, which corresponds to option B.

Given That Bw and Hv Are Closely Linked,which of the Following