Ok thanks for the information looks like my information was incorrect. I knew of some racial variations in other races other then Caucasian but thought they were much more rare. I was thinking that maybe Caucasians maybe had Neanderthal DNA in them or some silmiliar pre human that wasn't in the other races or at least not as much.
When one reads about a group like the Bask for example having a much greater percentage of their group with RH negative blood it makes one wonder why and how this came to be. I was just wondering if DNA studies have pointed to any kind of conclusion.