Horn of Africa
Tishkoff ‘’et al’’ in 2009 published the largest study done to characterise genetic variation and relationships among populations in Africa. They examined 121 African populations, 4 African American populations and 60 non-African populations. Their results indicated a high degree of mixed ancestry reflecting migration events. In East Africa, all population groups examined had elements of Nilotic, Cushitic and Bantu ancestry amongst others to varying degrees. They also found that by and large, genetic clusters were consistent with linguistic classification with notable exceptions including the Luo of Kenya. Despite being Nilo-Saharan speakers, the Luo cluster with the Niger-Kordofanian speaking populations that surround them. They suggest that this indicates a high degree of admixture occurred during the southward migration of Southern Luo. Kalenjin groups and Maasai groups were found to have less Bantu ancestry but significant Cushitic ancestry.