The frequency for the allele for cystic fibrosis, an autosomal recessive trait is 1 in 2500 among white Americans. What is the heterozygote frequency?
A. 8%
B. 4%
C. 1%
D. 10%
E. 14%
The answer is 4%. What I don't understand is why q^2= .0004 (1/2500). Shouldn't q =.0004? I thought q was the frequency of the recessive allele, and q^2 was the phenotypic frequency. Can someone please explain this to me?
Thanks Much!
A. 8%
B. 4%
C. 1%
D. 10%
E. 14%
The answer is 4%. What I don't understand is why q^2= .0004 (1/2500). Shouldn't q =.0004? I thought q was the frequency of the recessive allele, and q^2 was the phenotypic frequency. Can someone please explain this to me?
Thanks Much!