Hardy-Weinberg equilibrium


Hardy-Weinberg equilibrium
   In a large random intrabreeding population, not subjected to excessive selection or mutation, the gene and genotype frequencies will remain constant over time. The sum p2 + 2pq + q2 applies at equilibrium for a single allele pair where p is the frequency of allele A, q the frequency of a, p2 the frequency of genotype AA, q2 the frequency of aa, and 2pq the frequency of Aa.

Forensic science glossary. . 2012.

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  • Hardy-Weinberg equilibrium — The frequencies of genotypes at a locus resulting from random mating at that locus; for two alleles, A1 and A2, with respective frequencies in a population of p and q, the Hardy Weinberg equilibrium frequencies are p2 A1A1; 2pq A1A2; q2 A2A2.… …   Glossary of Biotechnology

  • Hardy-Weinberg-Equilibrium — Hardy–Weinberg Gleichgewicht für zwei Allele: die horizontale Achse zeigt die beiden Allelfrequenzen p und q, die vertikale Achse zeigt die Genotypfrequenzen. Die drei möglichen Genotypen sind durch unterschiedliche Zeichen dargestellt. Das Hardy …   Deutsch Wikipedia

  • Hardy-Weinberg equilibrium — a state in which no evolution occurs; the frequencies of alleles in the gene pool will remain constant unless acted upon by other agents. The existence of the equilibrium relies on several conditions: population size must be very large, the… …   Dictionary of ichthyology

  • Hardy-Weinberg equilibrium — genetic e …   Medical dictionary

  • Hardy-Weinberg equilibrium law (principle rule) — Har·dy Wein·berg equilibrium, law (principle, rule) (hahrґde vīnґbərg) [Godfrey Harold Hardy, British mathematician, 1877–1947; Wilhelm Weinberg, German physician, 1862–1937] see under law, and see genetic equilibrium, under… …   Medical dictionary

  • Hardy–Weinberg principle — for two alleles: the horizontal axis shows the two allele frequencies p and q and the vertical axis shows the genotype frequencies. Each graph shows one of the three possible genotypes. The Hardy–Weinberg principle (also known by a variety of… …   Wikipedia

  • hardy-weinberg — ˌhärdēˈwīnˌbərg adjective Usage: usually capitalized H&W : of, relating to, or governed by the Hardy Weinberg law Hardy Weinberg equilibrium …   Useful english dictionary

  • Hardy-Weinberg law — /hahr dee wuyn berrg/, Genetics. a principle stating that in an infinitely large, randomly mating population in which selection, migration, and mutation do not occur, the frequencies of alleles and genotypes do not change from generation to… …   Universalium

  • Hardy-Weinberg law — Basic concept in population genetics discovered independently in 1908 by the great English mathematician G(odfrey) H(arold) Hardy and Wilhelm Weinberg, a physician in Germany. The Hardy Weinberg law is a cornerstone of clinical genetics. (In… …   Medical dictionary

  • Hardy-Weinberg law — Mathematical formula that gives the relationship between gene frequencies and genotype frequencies in a population. If genotypes are AA, Aa, aa and the frequency of alleles A,a are respectively p,q, then p+q=1 and AA:Aa:aa is p2 :2pq:q2.… …   Dictionary of molecular biology


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