Mutations, bad not good (Introduction)

by David Turell , Sunday, July 17, 2011, 02:55 (4857 days ago) @ Balance_Maintained


> According to the earlier discussion, speciation is defined by the two species not being able to breed. Yet this article provides incontrovertible proof that Neanderthals, supposedly a different species, did breed with modern humans. So are they a different species, or not?-I agree with your discussion that I have deleted, but thought I'd add a comment or two about this paragraph, with which I agree.-We know certain species interbreed but the offspring are sterile. On the other hand wolves and dogs are really the same species and can breed with offspring that can breed. We have lots of wolf-dogs in Texas. Very logical; they are the same species with great modifications by human breeders. Of course Neanderthals and humans bred, most likely by rape, as DNA still present in us proves. Probably not different species, just variations on the hominid line of evolution. I'm sure Homo habilis developed from Homo erectus, or the other way around, both co-existed and interbred. I'm sure that species that modify enough to seem different, can interbreed and produce off-spring that interbreed.- Since there are no fossil series that show Darwin's tiny gradual steps, I agree that PE is the main mechanism, whatever that means. In medicine, if we didn't understand a process, we gave it a name and everyone felt better. PE is the same way, recognized but not understood.