Ravi
Diamond Member
btw: Various breeds of dog also came from a single, common, ancestral stock. What makes them all members of the same species is the ability to produce fertile offspring. Breed, like race, has nothing to do with this. It is merely a layer of segmentation within a particular species based on any number of traits.
Maybe you're just getting way over my head. Are you saying blacks and whites can't produce fertile offspring together?