Question

.3*.3In peas, a gene controls flower color 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? In peas, a gene controls flower color 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?
0.64
0.36
0.75
0.80

Answer 1

Answer:

0.80

Explanation:

Purple flower color is dominant over white color. The genotype of plants with white flowers would be "rr". The total population size = 36 purple-flowering plants + 64 white-flowering plants = 100

According to the given information, the proportion of homozygous recessive plants (q2) in the total population is = 64/100= 0.64

Therefore, the frequency of recessive allele "r" in the given population is (q)= square root of 0.64 = 0.80.