Explain Hardy-Weinberg principle.
Hardy-Weinberg principle states that the frequency of occurrence of alleles of a gene in a population is stable and is constant from generation to generation.
It is expressed as
Sum of total allelic frequencies is 1
p and q represent the frequency of alleles A and allele a.
The frequency of AA individuals in a population is .
Similarly of aa is , of Aa is 2pq
Five factors are known to affect Hardy - Weinberg equilibrium.
These are gene migration or gene flow, genetic drift, mutation genetic recombination, and natural selection.