Posted: Feb 25, 2014 6:34 pm
by questioner121
Calilasseia wrote:
Oh wait, I've already told you to look up fertillin genes. Which, wait for it, acquire changes over time leading to those incompatibilities.

Is the fertillin genes the deciding factor in whether one population can interbreed with another? If so then it should be possible to modify it so that reptiles and birds can interbreed and for that matter most animals.