The Hardy–Weinberg Equilibrium

Table 20.1 The Hardy—Weinberg Equilibrium Assumptions 1. Population size is infinite. 2. Random mating occurs in the population, allowing genotype frequencies to be predicted by allele frequencies. Natural selection does not operate. Migration (gene flow) does not introduce new alleles. Mutation does not introduce new alleles. S-“Pf” 6. Genetic drift does not occur. Predictions 1. Allele frequencies remain stable over time. 2. Allele distribution into genotypes is predictable. 3. Stable equilibrium frequencies of alleles and genotypes are maintained. 4. Evolutionary and nonrandom mating effects are predictable.