UPDATE: The Sinai Peninsula needs to be included as well. On a national level, no country reaches the high number of 20% rh negative people, even though Australia is close with 19.5. The Berbers There are only 2 reports available according to which the percentage of some Berber tribes (namely the Ait Haddidu Berbers in the Atlas mountain region of Morocco) have a percentage of rh negatives reaching as high as 40% The Basques Around 35% of Basques are rh negative in the higher regions. The Basques are located in the Pyrenees mountain region of Spain and France. Basque ancestry has been traced to the Sumerian region based on genetic examination of ancient burial grounds and in terms of similarity … Continue reading 7 Regions with more than 20% Rh Negatives