关于跨物种边界的限制性片段长度多态性的关联。
On the association of restriction fragment length polymorphisms across species boundaries.
作者信息
Fu Y X, Arnold J
机构信息
Department of Genetics, University of Georgia, Athens 30602.
出版信息
Proc Natl Acad Sci U S A. 1991 May 1;88(9):3967-71. doi: 10.1073/pnas.88.9.3967.
Abstract
We study the expected values of gametic-phase disequilibrium in both nuclear and cytonuclear systems in a finite population composed of reproductively isolated subpopulations. Random drift alone within each subpopulation will generate permanent overall non-zero gametic-phase disequilibrium in both a two-locus nuclear system and a cytonuclear system unless the population has an overall initial disequilibrium of zero. We derive formulae for the expected overall disequilibrium when mutation is involved and demonstrate that these values decay to zero at an extremely slow rate compared with the decay of the expected disequilibria within each subpopulation.
摘要
我们研究了由生殖隔离的亚群组成的有限种群中，核系统和细胞质-核系统中配子相位不平衡的期望值。除非种群总体初始不平衡为零，否则每个亚群内仅随机漂变就会在双位点核系统和细胞质-核系统中产生永久性的总体非零配子相位不平衡。我们推导了涉及突变时的总体不平衡期望值公式，并证明与每个亚群内预期不平衡的衰减相比，这些值以极慢的速率衰减至零。
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