Question

5. If 51% of the population carries at least one copy of the recessive allele....... What is the predicted frequency of individuals in the population that express the dominant phenotype? What is the predicted frequency of individuals in the population that express the recessive phenotype?

Answer 1

Hardy weinberg law P2+2pq=q2

Given 2pq = 0.51 --->1

P+q=1
q = 1-P---->2

Sub 2 in 1

2p(1-P) = 0.51
2p-2p^2-0.51 = 0

Rearrange this,
P^2 - P + 0.255 = 0

Expected frequency of dominant phenotype P = 0.5 or 50%

So Expected frequency of recessive phenotype q = 0.5 or 50%