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Within a population of butterflies, the color brown (B) is dominant over the color white (b);...

Within a population of butterflies, the color brown (B) is dominant over the color white (b); 40% of all butterflies are white. What are the genotype frequencies of BB, Bb, and bb?
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Answer #1

40% are white, i.e, recessive so,

Acc to Hardt weinberg law, p2 +2pq +q2 =1

Here, q=0.4, so p=0.6

BB = p2 = 0.36

Bb= 2pq= 0.48

bb= q2 = 0.16

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