試題詳解

38. Phenylketonuria (PKU) is due to a recessive allele. Given 1 PKU occurrence per 25 births, what is the frequency of individuals with the heterozygous phenotype if the population is in Hardy-Weinberg equilibrium?
(A) 0.2
(B) 0.32
(C) 0.64
(D) 0.8
(E) 0.96