Assuming that the population in Western Europe follows Hardy Weinberg equilibrium forthis trait, the genotypic frequencies should follow the equation p2 + 2pq + q2 = 1, where p2 is the frequency of the homozygous dominant genotype, 2pq is the frequency of heterozygotes, and q2 is the frequency of the homozygous recessive.
Among Western European people, 64% of the population find phenylthiocarbamide (PTC) to taste bitter. The remainder cannot taste it. What is the frequency of the dominant allele T which confers the ability to taste PTC?
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