Coloration in the peppered moth (Biston betularia) is determined by a single gene with two alleles showing complete dominance. Dark moths are homozygous dominant or heterozygous for the gene, light moths are homozygous recessive. In a sample of 100 moths, you determine that 64 of the moths are dark. According to the Hardy-Weinberg rule, the expected frequency of the dominant allele is ________.
A. 0.6
B. 0.64
C. 0.36
D. 0.4
E. It cannot be determined.
Answer: D
Biology & Microbiology
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