Hybridization plays an important role in biological evolution. However, it is not clear under what ecological conditions hybridization may be favored. Assessing hybridization among species pairs that occupy geographically extensive contact ranges may provide a better understanding of when barriers to gene flow are likely to be weakened and, subsequently, where a significant proportion of diversification is likely to occur.
Click here for original story, Two closely related fig species show signatures of hybridization at climatic margins
Source: Phys.org