Question 21
You have sampled a population in which you know that the percentage of the homozygous recessive genotype (aa) is 36%.
Using that 36%, calculate the following- the frequency of the "a" allele. (q)
p2 + 2pq + q2 = 1 and p + q = 1
a
0.36
b
0.4
c
0.6
d
1
The percentage of the homozygous recessive genotype (aa) is equal to q^2, where q is the frequency of the "a" allele.
Thus, q^2 = 0.36
Taking the square root of both sides, we get:
q = √0.36
q = 0.6
Therefore, the frequency of the "a" allele (q) is 0.6.
Answer: c) 0.6