The Basque people of Spain and France have the highest percentage of Rh negative blood. About 30% have (rr) Rh negative and about 60% carry one (r) negative gene. The average among most people is only 157%-Rh negative, while some groups have very little. The Oriental Jews of Israel, also have a high percent Rh negative, although most other Oriental people have only about 1% Rh negative. The Samaritans and the Black Cochin Jew also have a high percentage of Rh negative blood, although again the Rh negative blood is rare among most black people.
The Rh-Negatives Factor is considered a "Mutation" of "Unknown Origin", which happened in Europe, about 25,000-35,000 years ago. Then this group spread heavily into the area of what is now Spain, England, Ireland, etc. 5% of the Earth's population are currently Rh-Negatives. But, they are 15% of the population of the England and the USA. The most distinctive members of the European branch of the human tree are the Basques of France and Spain. They show unusual patterns for several genes, including the highest rate of the Rh-negative blood type. Their language is of unknown origin and cannot be placed within any standard classification.