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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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| First, we wanted to determine if Sumgayit populations exhibit reduced levels of genetic diversity that could be the result of a population bottleneck. The genetic picture suggests that about 10,000 years ago, the truffle endured a population bottleneck, a massive die-off that left only a few survivors to repopulate the range, the researchers say. The east African results suggest that two major population bottlenecks occurred in the cheetah population. |
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