For Hardy-Weinberg equilibrium to occur (that is, for evolution not to occur), several conditions that would cause evolution must be absent. Which of the following conditions are required for Hardy-Weinberg equilibrium

The Hardy-Weinberg principle assumes that in a given population, the population is large and is not experiencing mutation, migration, natural selection, or sexual selection.

The frequency of alleles can be estimated by the genotype, then calculating the square root of that frequency in order to determine the frequency of the recessive allele.