hardy-weinberg equilibrium (def.)
a model that describes populations that are not evolving
The Hardy-Weinberg equilibrium is a fundamental principle in population genetics that describes the relationship between the frequencies of alleles and genotypes in a population that is not evolving. It is based on a set of assumptions, including large population size, random mating, no mutation, no gene flow, and no natural selection, which provide a theoretical model for how gene frequencies should be distributed in a stable population. According to the principle of Hardy-Weinberg equilibrium, the frequencies of alleles and genotypes remain constant from generation to generation in the absence of disruptive evolutionary forces. This principle is useful for estimating the frequencies of alleles in populations and understanding the processes that can lead to genetic variation and evolution.
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