O rhesus negative, it's prevalence in Poland?

Sep 2015
75
South
Hi i'm new just wondered if anyone could tell me anything about O rhesus negative blood type. I've heard the Basques and some Scots have a high prevalence. I've also heard it's common, relatively, in western Poland. It's thought by some to be the oldest blood type, due to it being universal. What i want to know is what tribal groups in Poland is it most common in and any relevant info. If it came to Europe with neanderthals or later with Proto-Europeans and generally any thoughts you may have. Sorry if i'm slow to respond i'm not the sharpest tool in the box and technology baffles me somewhat.

Cheers.