Hardy–Weinberg law
Hardy–Weinberg law The law which states that in an infinitely large, interbreeding population, in which mating is random and in which there is no selection, migration, or mutation, gene and genotype frequencies will remain the same between the sexes and constant from generation to generation, with no overlap between generations. In practice these conditions are rarely strictly present, but unless any departure is a marked one, there is no statistically significant movement away from equilibrium. Consider a single pair of alleles, A and a, present in a diploid population with frequencies of p and q respectively. Three genotypes are possible, AA, Aa, and aa, and these will be present with frequencies of p2, 2pq, and q2 respectively. The law was established in 1908 by G. H. Hardy and W. Weinberg.
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Hardy–Weinberg law
