Are the Cohens high in Rh- blood? Rhesusnegative.net 11 months ago Why do the Samaritans have high frequencies of Rh-blood? In the Samaritan community, the kohanim have remained the primary religious leaders. Ethiopian Jewish religious leaders are sometimes called kahen, a form of the same word, but the position is not hereditary and their duties are more like those of rabbis than kohanim in most Jewish communities. Bedouins The Basque-Sumerian-Rh Negative Connection