In peas, a gene controls flower colour such that R = purple and r = white. In an isolated pea patch, there are 36 purple-flowering plants and 64 white-flowering plants. Assuming Hardy-Weinberg equilibrium, what is the value of q for this population?
A) 0.36
B) 0.64
C) 0.75
D) 0.80

Question

Quizplus · Accepted Answer

In Hardy-Weinberg equilibrium, q^2 represents the frequency of the homozygous recessive genotype (rr), which is the white-flowering plants. There are 64 white-flowering plants out of 100 total plants, so q^2 = 64/100 = 0.64. Therefore, q = √0.64 = 0.80.

In Peas, a Gene Controls Flower Colour Such That R