This is a pretty fascinating mechanism that has contributed to evolution since life began. One can consider viral infection to be a kind of hybridization, and it now appears that most speciation derives from hybridization, rather than through Darwinian mechanisms.
From lateral gene swaps in bacteria, to interspecific reproduction, more, and more remarkable, methods of generating novel species are being discovered.
Thanks!
It definitely adds to the debate. I'm guessing it's a combination of the two.