Horn of Africa
According to Gomes et al. (2010), Haplogroup B is another characteristically Nilotic paternal marker. It was found in 22% of Wood et al.’s Luo samples, 8% of studied Maasai and 50% of studied Nuer. The E1b1b haplogroup has been observed at overall frequencies of around 11% among Nilo-Saharan-speaking groups in the Great Lakes area, with this influence concentrated among the Maasai (50%). This is indicative of substantial historic gene flow from Cushitic-speaking males into these Nilo-Saharan-speaking populations. In addition, 67% of the Alur samples possessed the E2 haplogroup.