Interbreeding is not evolution .. it is conquest and genetics.
Traces of neanderthals abound.
Prove they don't.
When I get home, I had planned to reprise my usual Shreeve quote. :')
There was no interbreeding.
You can't breed a cat with a lion. They are different species.
You can't breed a chimpanzee with a gorilla. They are different species.
You can't breed a neanderthal and a homo erectus. They are different species.
And, you can't breed the original hominoid with a homo eructus. That would be difficult because the hominoid would be 500,000 years old.