In population genetics studies, the Hardy-Weinberg equation can be used to measure whether the observed genotype frequencies in a population differ from the frequencies predicted by the equation.

6A and .4a and genotype frequencies of .36AA, .48Aa, and .16aa. By describing specific ideal conditions under which a population would not evolve, the Hardy-Weinberg principle identifies variables ...

the law predicts that both genotype and allele frequencies will remain constant because they are in equilibrium. The Hardy-Weinberg equilibrium can be disturbed by a number of forces, including ...