You have two populations of flowering plants. In these populations floral color is controlled by one gene. The red gene (R) is dominant to the white gene (r). In population 1, 75% of the flowers are red, in population 2 25% of the flowers are white. Assuming the population is in Hardy-Weinberg equilibrium, which population has a greater frequency of the R allele?
A)population 1
B)population 2
C)Neither; they both have the same frequency.

Question

Quizplus · Accepted Answer

Both populations have the same frequency of the R allele. In Hardy-Weinberg equilibrium, the frequency of the dominant phenotype (red flowers) is 75% in population 1 and 75% in population 2 (since 25% are white, which is rr). Therefore, the frequency of the R allele is the same in both populations.

You Have Two Populations of Flowering Plants