Zoology - Evolution Question with Solution | TestHub

The frequency of occurrence of alleles of a gene or locus is supposed to remain fixed and even remain the same through generations. Hardy Weinberg principle is that allele frequencies in a population are stable and is constant from generation to generation. Total genes and their alleles (gene pool) of a population remain constant and maintain genetic equilibrium. Sum total of all the allele frequency is 1. It can also be stated as${\mathrm{p}}^2+2\mathrm{p}\mathrm{q}+{\mathrm{q}}^2=1,$where p and q represent the frequency of allele A and a. Gene migration, genetic drift, mutation, genetic recombination and natural selection are factors which affect Hardy-Weinberg equilibrium.