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Hardy-Weinberg equilibrium principle

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Hardy-Weinberg equilibrium principle
[här′dē wīn′ bərg]
Etymology: G. H. Hardy, English mathematician, 1877-1947; Wilhelm Weinberg, German physician, 1862-1937; L, aequilibris, equal weight, principium, a beginning
a principle stating that the frequency of alleles and genotypes remains relatively unchanged from generation to generation in a large, interbreeding population characterized by random mating, mendelian inheritance, and the absence of migration, mutation, and selection. Under such conditions, the ratio of individuals homozygous for a dominant allele to those heterozygous to those homozygous for a recessive allele is 1:2:1. See also genetic equilibrium.


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