Darwin’s finches story falls apart

“Shaking up the Tree of Life” – http://science.sciencemag.org/content/354/6314/817 Reproductive isolation was, until recently, part of the classic definition of a species. But this definition never worked, first because various species like Neanderthal and Homo Sapiens can mate and birth fertile descendants, and second because this definition left out all nonsexual reproducing organisms. What is not […]