random genetic drift


random genetic drift

Glossary of Biotechnology for Food and Agriculture . 2015.

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  • random genetic drift — see drift (def. 2) …   Medical dictionary

  • genetic drift — random changes in the frequency of alleles in a gene pool, usually of small populations. Cf. gene flow. [1955 60] * * * Change in the pool of genes of a small population that takes place strictly by chance. Genetic drift can result in genetic… …   Universalium

  • genetic drift — n random changes in gene frequency esp. in small populations when leading to preservation or extinction of particular genes * * * the tendency for variations to occur in the genetic composition of small isolated inbreeding populations by chance.… …   Medical dictionary

  • genetic drift — n. in evolution, a) a random change in gene frequency within a small population, resulting in mutations which, regardless of their adaptive value, become fixed within the group b) any such process …   English World dictionary

  • Genetic drift — ] Especially in small populations, the statistical effect of sampling error ( during reproduction ) on certain alleles from the overall population may result in an allele ( and the biological traits that it confers ) becoming more common or rare… …   Wikipedia

  • genetic drift — Genetic changes in isolated populations caused by random phenomena rather than by natural selection; see population, local …   Dictionary of invertebrate zoology

  • genetic drift — Random change in allele frequency within a population. If the population is isolated and the process continues for long enough may lead to speciation …   Dictionary of molecular biology

  • genetic drift — genet′ic drift′ n. gen random changes in the frequency of alleles in a gene pool, usu. of small populations Compare gene flow • Etymology: 1955–60 …   From formal English to slang

  • genetic drift — /dʒəˌnɛtɪk ˈdrɪft/ (say juh.netik drift) noun a significant change in gene frequency in a population, occurring not as a result of selection, emigration or immigration, but from random causes affecting the alleles concerned …   Australian English dictionary

  • genetic drift — noun Date: 1945 random changes in gene frequency especially in small populations when leading to preservation or extinction of particular genes …   New Collegiate Dictionary