基因漂变甚至可以抵消自然选择。
毫无疑问，人类与猿猴之间以及不同人群之间的大部分基因差异都是因为基因漂变而产生。
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.
虽然任何中立变异随机传播的可能性很小，每一代个体产生的大量变异却使基因漂变具备显著的力量。
Although the likelihood of any neutral mutation spreading by chance is tiny, the enormous number of mutations in each generation makes genetic drift a significant force.
自然选择将保存重要功能的基因序列，但是其他基因会因为漂变而被改变。
Natural selection will preserve sequences with vital functions, but the rest of the genome will change because of drift.
当人体经过遗传漂变的过程后，基因变种在人类中变得更常见。
New versions of a gene can also become universal in a population through a random process known as genetic drift.
并且4个居群的基因流值都大于2，说明基因交流防止了由遗传漂变引起的居群间的遗传分化。
And gene flows of 4 populations were over 2, which suggested that there existed sufficient genetic exchanges to prevent the genetic differentiation made by genetic drift among population.
并且4个居群的基因流值都大于2，说明基因交流防止了由遗传漂变引起的居群间的遗传分化。
And gene flows of 4 populations were over 2, which suggested that there existed sufficient genetic exchanges to prevent the genetic differentiation made by genetic drift among population.
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