雌雄异株种群中的近亲繁殖有效种群数量。
The inbreeding effective population number in dioecious populations.
作者信息
Nagylaki T
机构信息
Department of Ecology and Evolution, University of Chicago, Illinois 60637.
出版信息
Genetics. 1995 Jan;139(1):473-85. doi: 10.1093/genetics/139.1.473.
Abstract
The inbreeding effective population number in a dioecious population with discrete, nonoverlapping generations is investigated for both autosomal and X-linked loci. The recursion relations for the probabilities of genic identity, and the effective population numbers are analyzed and compared in two cases: (i) the offspring identified by sex in the calculation of the probability of common parentage and (ii) the offspring not so identified. Case i gives the correct evolution of the probabilities of identity, but case ii has been more widely studied and applied. A general symmetric framework that reduces the number of parameters is developed and used to examine a wide variety of models of panmixia and monogamy. Cases i and ii agree in many, but not all, models.
摘要
针对具有离散、不重叠世代的雌雄异株种群，研究了常染色体和X连锁基因座的近亲繁殖有效种群数量。分析并比较了两种情况下基因同一性概率的递归关系以及有效种群数量：（i）在计算共同亲本概率时按性别识别后代；（ii）不按性别识别后代。情况（i）给出了同一性概率的正确演变，但情况（ii）得到了更广泛的研究和应用。开发了一个减少参数数量的通用对称框架，并用于检验各种随机交配和一夫一妻制模型。在许多但并非所有模型中，情况（i）和（ii）是一致的。
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