Pollak E
Department of Statistics, Iowa State University, Ames 50011.
Math Biosci. 1990 Sep;101(1):121-30. doi: 10.1016/0025-5564(90)90105-8.
Let a population have the same age distribution and age-specific sex ratios at times 0, 1, 2,..., and let M, F, and L, respectively, be the numbers of males and females in the youngest age group and the generation interval. It can then be shown that if there is a sex-linked locus the fixation probabilities of a neutral allele are respectively 1/3LM or 1/3LF if the allele first appears in one newborn male or in one newborn female. The effective population size can then be derived. It is the same as for a population with discrete generations having the same means, variances, and covariances of male and female progeny during a lifetime and the same number of individuals entering the population per generation.
假设有一个种群，在时刻0、1、2……具有相同的年龄分布和特定年龄的性别比，并且设M、F分别为最年轻年龄组中的男性和女性数量，L为世代间隔。那么可以证明，如果存在一个性连锁基因座，当中性等位基因首次出现在一个新生雄性或一个新生雌性中时，其固定概率分别为1/3LM或1/3LF。然后可以推导出有效种群大小。它与一个具有离散世代的种群相同，该种群在一生中雄性和雌性后代具有相同的均值、方差和协方差，并且每代进入种群的个体数量相同。
