Potter Sally, Moritz Craig, Eldridge Mark D B
Research School of Biology and Centre for Biodiversity Analysis, The Australian National University, Acton, Australian Capital Territory 2601, Australia Australian Museum Research Institute, Sydney, New South Wales 2010, Australia
Research School of Biology and Centre for Biodiversity Analysis, The Australian National University, Acton, Australian Capital Territory 2601, Australia.
Biol Lett. 2015 Oct;11(10). doi: 10.1098/rsbl.2015.0731.
Complex Robertsonian rearrangements, with shared arms in different fusions, are expected to prevent gene flow between hybrids through missegregation during meiosis. Here, we estimate gene flow between recently diverged and chromosomally diverse rock-wallabies (Petrogale) to test for this form of chromosomal speciation. Contrary to expectations, we observe relatively high admixture among species with complex fusions. Our results reinforce the need to consider alternative roles of chromosome change, together with genic divergence, in driving speciation.
复杂的罗伯逊重排，即在不同融合中存在共享臂，预计会通过减数分裂期间的错误分离来阻止杂种之间的基因流动。在此，我们估计了最近分化且染色体多样的岩袋鼠（Petrogale）之间的基因流动，以测试这种染色体物种形成形式。与预期相反，我们观察到具有复杂融合的物种之间存在相对较高的混合。我们的结果强化了在推动物种形成过程中，需要考虑染色体变化与基因分歧的替代作用。
