Far From Sterile, Some Hybrids May Start New Species
Your schoolteachers probably told you most species wouldn’t (or maybe couldn’t) successfully interbreed with one another. If some did, their hybrid offspring, like mules, couldn’t have babies of their own. That explanation was a bit oversimplified. Hybridization happens, and it may be one way new species arise. In an article at Ensia, Greg Breining examines…