Answered

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A population of mice has black or brown hair. The gene for black hair color (B) is dominant over brown (b). If 16% of the mice are homozygous black and 24% are heterozygous black, what would be the frequency of each allele?
(p + q = 1, p2 + 2pq + q2 = 1)

Sagot :

if B and b are the two alleles , B + b = 1 and B ^2 +2 Bb + b ^2 = 1.

If 16% of mice are homozygous black , B ^ 2 =0 .16, meaning B = 0 .4 and b = 1 - 0. 4 = 0 .6 .
Answer = Notice how you don't even need to know that 24% of the mice are heterozygous .
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