genetic drift

音標(biāo)發(fā)音

This “genetic drift” happens at a constant rate.
這種“遺傳漂變”以恒定的速率產(chǎn)生結(jié)果。
One is that because tropical species often have smaller populations than temperate ones, they are more susceptible to genetic drift.
一種假說認(rèn)為生長(zhǎng)在熱帶地區(qū)的物種比溫帶物種的種群小，所以受遺傳漂變的影響更大。
There is no doubt that most of the genetic differences between humans and other apes – and between different human populations – are due to genetic drift.
毫無疑問，人類與猿猴之間以及不同人群之間的大部分基因差異都是因?yàn)榛蚱兌a(chǎn)生。

Modern evolutionary biology as we understand it, which is to say variation via genetic drift, mutations, duplications combined with the pruning filter of natural selection, certainly explains a great deal.
FORBES: Evolution and Embodied Physiology
The lawsuits, pain and suffering for all involved, the questions of hybridized genetic drift, far too massive, scientifically complex, and global in scope to even intimate in an opinionated response to a vested opinion.
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What we learn from these areas is precisely how evolution has acted to sculpt bodies, but it still does so using randomly-generated genetic variation and good old natural selection (and yes, Larry Moran, genetic drift also plays a role).
FORBES: Epigenetics: The Revolution That Wasn't

a situation in which the frequency of a particular gene in a small population of living things changes without a known cause