在物种演化研究中，生殖隔离与杂交现象的矛盾关系一直是未解之谜。为深入探究，研究人员以剑尾鱼（Xiphophorus）为对象，结合多种实验手段开展研究。结果发现，剑尾鱼虽存在多种生殖隔离机制，但基因流仍广泛存在。这一成果为理解物种演化提供了新视角。

In the past decade, advances in genome sequencing have allowed researchers to uncover the history of hybridization in diverse groups of species, including our own. Although the field has made ...