I stand corrected. I am deeply ashamed about my previous ignorance ignoring what others have tried to teach me. After years of warning against the belief that rh- blood comes from aliens, I finally concur:
Rh- blood is not a result of evolution having taken place on earth, but rather a phenomenon once imported from far away.
I guess I was hard-headed and needed some proof.
How could this have happened?
See the official study here:
DNA samples found on mars compatible with Neanderthal DNA found on earth