Butlin Roger K
Department of Animal and Plant Sciences, The University of Sheffield, Western Bank, Sheffield S10 2TN, UK.
Mol Ecol. 2005 Aug;14(9):2621-35. doi: 10.1111/j.1365-294X.2005.02617.x.
Speciation can be viewed as the evolution of restrictions on the freedom of genetic recombination: new combinations of alleles can be generated within species, but alleles from different species cannot be brought together. Recently, there has been increasing realization that the role of chromosomal rearrangements in speciation might be primarily a result of their influence on recombination. I argue that ideas about the role of recombination in speciation should be considered in the context of the variability of recombination rates and patterns more generally and that genic as well as chromosomal causes of restricted recombination should be considered. I review patterns of variation in recombination rates and theoretical progress in understanding the conditions that favour increased or decreased rates. Although progress has been made in understanding conditions that alter overall rates of recombination, widespread variation in patterns of recombination remains largely unexplained. I consider three models for the role of locally restricted recombination in speciation and the evidence currently supporting them.
等位基因的新组合可以在物种内部产生，但来自不同物种的等位基因不能组合在一起。最近，人们越来越认识到染色体重排在物种形成中的作用可能主要是其对重组影响的结果。我认为，关于重组在物种形成中的作用的观点应该在更普遍的重组率和模式变异性的背景下加以考虑，并且应该考虑基因以及染色体重组受限的原因。我回顾了重组率的变化模式以及在理解有利于重组率增加或降低的条件方面的理论进展。尽管在理解改变重组总体速率的条件方面已经取得了进展，但重组模式的广泛变异在很大程度上仍未得到解释。我考虑了三种关于局部受限重组在物种形成中的作用的模型以及目前支持它们的证据。
