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population bottleneck |
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population bottleneck [‚päp·yə′lā·shən ′bäd·əl‚nek] (evolution) Genetic drift that occurs as a result of a drastic reduction in population by an event having little to do with the usual forces of natural selection. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| 168) cites evidence of a severe genetic bottleneck, suggesting that perhaps no more than three pregnant females launched the expanding western Atlantic red lionfish population. Cheetahs have been forced into a genetic bottleneck with just 14 gene strains, so breeding must be carefully coordinated, Roode explains. subpopulation is consistent with an older age, more rapid evolution in this focus, or a historical genetic bottleneck unique to the A. |
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