AP Biology· difficulty 3/5
A large population of moths shows two coloration alleles: dark (D) and light (d). In one generation, the genotype counts are: DD = 36, Dd = 48, dd = 16 (out of 100 individuals).
What is the frequency of the D allele in this population?
0.4
0.48
0.6
0.36
Explanation
p = (2 x DD + Dd) / (2 x N) = (72 + 48) / 200 = 120/200 = 0.6.
Want 10 more like this — adaptive to your weak spots?
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