A gene locus has two alleles ,a. If the frequency of dominant allele is ,then what will be the frequency of homozygous dominant, heterozygous and homozygous recessive individuals in the population ?
The Hardy-Weinberg formulas -
This formula allows detecting frequencies that change from generation thus allowing a simplified method of determining that evolution is occurring.
- wherein
In a population at equilibrium for a locus of two alleles D and d having frequencies p and q respectively, the genotype frequencies are:
DD=p2,
Dd= 2 pq,
dd= q2
and p+q =1
p2+2 pq +q2 = 1
Given :
So,
Therefore,