Question

The incidence of cystic fibrosis, a recessive genetic disorder in the Caucasian population of United States, is 1 in every 2,500 individuals. Find the number of heterozygous carriers.
(p + q = 1, p2 + 2pq + q2 = 1)

Answer 1

p is homozygous dominant q is honozygous recessive pq is hetero
as it is recessive....q=1/2500=0.0004
now p+q=1
p+0.0004=1
p=0.996
now u can find pq...which is heterozygoues carrier