Species boundaries, hybridization and gene flow

Resumen

The rise of genomics has spurred a renewed interest in hybridization and the permeability of species boundaries.  However, these ideas are not new.  Here I review early work by Patton and colleagues on hybridization, gene flow, and the nature of species boundaries in pocket gophers and argue that a focus on the underlying biology of the organism provides insights into hybridization and gene flow that are not obtainable from genomic data alone.