Where is Rh- blood most frequent? Rhesusnegative.net 9 months ago 33% of Chilean Basques are Rh- More than 30% Rh- in parts of Scotland More than 27% of Northern Ireland is Rh- Sinai Peninsula Bedouins 21% Rh-, possibly up to 30% 29% of the Ait Moghrad population in the High Atlas Range is Rh- Rhone Valley (Swiss) communities w/more than 26% Rh- Did you know? 25% of the Amish are Rh- 7 Regions with more than 20% Rh Negatives Rh- Tribes in Ancient Times