Question 19

Question

You have sampled a population in which you know that the percentage of the homozygous dominant genotype (AA) is 16%.

Using that 16%, calculate the following - the frequency of the "A" allele. (p)



p2 + 2pq + q2 = 1 and p + q = 1
a
0.16
b
0.4
c
0.36
d
1

Answer 1

To calculate the frequency of the "A" allele (p), we can use the fact that the percentage of the homozygous dominant genotype (AA) is 16%.

Since AA represents p^2 in the Hardy-Weinberg equation (p^2 + 2pq + q^2 = 1), we know that:
p^2 = 0.16

Taking the square root of both sides to solve for p:
p = √0.16
p = 0.4

Therefore, the frequency of the "A" allele (p) is 0.4.

So, the correct answer is:

b. 0.4