基于生物学物种定义探讨物种形成理论与验证的研究进展
肖钰, 王茜, 何梓晗, 李玲玲, 胡新生

Advances in speciation theories and their verifications based on the biological species concept
Yu Xiao, Xi Wang, Zihan He, Lingling Li, Xinsheng Hu
图2 邻域物种形成: 两物种交界处呈现杂交带。基因频率随地理距离而呈梯度变异。
Fig. 2 Parapatric speciation: A hybrid zone occurs in the boundaries between two species. The gene frequency changes in a clinal pattern with the geographic distance.