The evolution of recombination cold spots during speciation

物种形成过程中重组冷点的演化

• 批准号: DP140103774
• 负责人: Prof Daniel Ortiz-Barrientos
• 金额: $ 29.34万
• 依托单位: The University of Queensland
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP140103774
• 关键词: evolution; recombination; cold; spots; during

In the absence of geographic barriers, sexual reproduction between diverging populations is the greatest obstacle to the formation of new species. As diverging populations accumulate differences by the action of natural selection, genetic recombination resulting from sexual reproduction eliminates them. As a consequence, cases of speciation with gene flow such as sympatric or parapatric speciation have been considered improbable. This project will investigate novel hypotheses for the formation of new species in the face of gene flow, and will evaluate empirically their predictions using the groundsel Senecio lautus. Results derived from this investigation will provide novel insights into the old riddle of speciation with gene flow.

在没有地理障碍的情况下，不同种群之间的有性繁殖是形成新物种的最大障碍。由于不同的种群在自然选择的作用下积累了差异，有性繁殖产生的基因重组消除了差异。因此，物种形成与基因流动的情况，如同域或异域物种形成被认为是不可能的。本项目将研究面对基因流动的新物种形成的新假设，并将利用土sel Senecio lautus对他们的预测进行实证评估。这项研究的结果将为基因流动的物种形成之谜提供新的见解。