Recombination-suppression: how many mechanisms for chromosomal speciation?
Recombination-suppression: how many mechanisms for chromosomal speciation?
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DOI：
10.1007/s10709-011-9558-0
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发表时间：
2011-03-01
期刊：
影响因子：
1.5
通讯作者：
Jackson, Benjamin Charles
中科院分区：
文献类型：
--
作者：
Jackson, Benjamin Charles
在过去的十年里，一些理论和实证研究重新引起了人们对染色体在物种形成中的作用的兴趣。由此产生的模型不遭受先前提出的染色体物种形成机制所经历的问题，因为它们调用抑制重组，而不是减少异核型的适应性作为其核心过程。然而，他们并非没有困难。重组抑制模型的证据在这里讨论。总体结论是，目前不太可能就哪些模型最能描述现实世界的情况达成共识，因为现有的经验证据无法完全区分它们，这可能在一定程度上是由于缺乏排他性。我认为，未来的工作应该考虑到这种缺乏排他性。还建议解决物种形成的地理学，以区分各种模式。需要进一步研究，重点是确认各种模式的个别要素的运作情况，而不是试图验证任何单一机制作为一个整体。
Over the past decade several theoretical and empirical studies have revived interest in the role of chromosomes in speciation. The resulting models do not suffer from the problems experienced by previously proposed mechanisms of chromosomal speciation, because they invoke suppression of recombination rather than a reduction in the fitness of heterokaryotypes as their core process. However, they are not free from difficulties. The evidence for recombination-suppression models is discussed here. The general conclusion is that a consensus opinion on which models best describe the real-world situation is currently unlikely because of an inability of the available empirical evidence to fully distinguish between them, which may be due in part to a lack of exclusivity. I argue that future work should take this lack of exclusivity into account. Resolving the biogeography of speciation is also suggested in order to tell the various models apart. Further study is needed which focuses on confirming the operation of individual elements of the various models, rather than attempting to validate any single mechanism as a whole.