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A black haired mouse was crossed to a hairless mouse. Since it lacked hair, it was...

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Biology

A black haired mouse was crossed to a hairless mouse. Since itlacked hair, it was impossible to tell if its hair was black orbrown. All the F1 progeny had black hair. When these F1 progenywere mated among themselves (to obtain the F2 generation), 96 wereblack, 43 were hairless, and 30 were brown

(a) What is the approximate observed phenotypic ratio of theseoffspring? (1 points)

(b) Explain the pattern of inheritance observed here (what arethe genotypes that correspond to the observed phenotypes). Assumethat the two genes involved are called A and B. (4 points)

(c) What are the actual genotypes of the original parents? (2points)

(d) What are the actual genotypes of the F1 black haired mice?(1 point)

(e) What are the actual genotypes and phenotypes of the F2black, hairless, and brown mice, respectively (list all genotypesand phenotypes)? (5 points)

Answer & Explanation Solved by verified expert
4.2 Ratings (638 Votes)
a 96 were black 43 were hairless and 30 were brown total number of progeny 964330169 in a dihybrid cross there are 16 possibilities so divide the total number of progenies with 16 16916105625 the observed ratio is Black brown hairless 9630439128441 to simplify the ratio divide    See Answer
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