Horn of Africa
David Reich, a geneticist known for his studies on ancient DNA carried out a study which found that mutation frequencies in Luo people were much more similar to those of the surrounding Bantu speakers. They suggested that Luo speakers in East Africa may not have always been socially disadvantaged as they migrated into territories already inhabited by Bantu speakers. This is in keeping with oral history which affirms that large groups of Bantu speakers adopted Luo language, culture and customs that were dominant at the time.