Rogers A R
Department of Anthropology, University of Utah, Salt Lake City 84112.
Am J Phys Anthropol. 1988 Dec;77(4):435-49. doi: 10.1002/ajpa.1330770405.
Wright's metaphor of sampling is extended to consider three components of genetic drift: those occurring before, during, and after migration. To the extent that drift at each stage behaves like an independent random sample, the order of events does not matter. When sampling is not random, the order does matter, and the effect of population size is confounded with that of mobility. The widely cited result that genetic differentiation of local groups depends only on the product of group size and migration rate holds only when nonrandom sampling does not occur prior to migration in the life cycle.
赖特的抽样隐喻被扩展，以考虑遗传漂变的三个组成部分：那些发生在迁移之前、期间和之后的部分。就每个阶段的漂变表现得像一个独立随机样本而言，事件的顺序并不重要。当抽样不是随机时，顺序就很重要了，而且种群大小的影响与迁移率的影响相互混淆。被广泛引用的结果，即当地群体的遗传分化仅取决于群体大小和迁移率的乘积，仅在生命周期中迁移之前不存在非随机抽样的情况下成立。
