Approximating the Coalescent Under Facultative Sex.
Approximating the Coalescent Under Facultative Sex.
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近似兼性下的合并。
DOI：
10.1093/jhered/esaa036
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Hartfield M
中科院分区：
文献类型：
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作者：
Hartfield M
对兼性有性物种（可以有性繁殖或无性繁殖）的基因组研究为了解混合繁殖模式的进化后果提供了见解。目前尚不清楚兼性性别基因组的进化历史在多大程度上可以通过标准合并来近似，以及合并有效种群规模是否存在。在这里，我确定是否以及何时可以进行这些近似。当性行为频繁时（对于实际人口规模而言，发生频率远高于每代繁殖的频率），潜在的谱系可以通过标准合并来近似。当性行为非常罕见（频率远低于）时，可以获得成对合并时间的近似值，该时间很大程度上受到性行为频率和有丝分裂基因转换的影响。然而，这些术语并不翻译为聚结剂。这些结果用于讨论研究兼性物种进化史的最佳采样策略。
Genome studies of facultative sexual species, which can either reproduce sexually or asexually, are providing insight into the evolutionary consequences of mixed reproductive modes. It is currently unclear to what extent the evolutionary history of facultative sexuals’ genomes can be approximated by the standard coalescent, and if a coalescent effective population sizeexists. Here, I determine if and when these approximations can be made. When sex is frequent (occurring at a frequency much greater thanper reproduction per generation, forthe actual population size), the underlying genealogy can be approximated by the standard coalescent, with a coalescent. When sex is very rare (at frequency much lower than), approximations for the pairwise coalescent time can be obtained, which is strongly influenced by the frequencies of sex and mitotic gene conversion, rather than. However, these terms do not translate into a coalescent. These results are used to discuss the best sampling strategies for investigating the evolutionary history of facultative sexual species.