Origins of Hutu, Tutsi and Twa phenotype, genotype, cultural memory of inhabitants of Rwanda, archeology, and linguistics. Most Tutsis and Hutus carry the E1b1a paternal haplogroup, which is common among Bantu populations. More recent studies have de-emphasized physical appearance, such as height and nose width, in favor of examining blood factors, the presence of the sickle cell trait, lactose intolerance in adults, and other genotype expressions. Excoffier et al. (1987) found that the Tutsi and Hima, despite being surrounded by Bantu populations, are "closer genetically to Cushites and Ethiosemites". Another study concluded that, while the sickle cell trait among the Rwandan Hutu was comparable to that
Initial events of the Rwandan genocide Initial events of the Rwandan genocide The assassination of presidents Juvénal Habyarimana and Cyprien Ntaryamira in the evening of April 6, 1994 was the proximate trigger for the Rwandan genocide, which resulted in the murder of approximately 800,000 Tutsi and a smaller number of moderate Hutu. The first few days following the assassinations included a number of key events that shaped the subsequent course of the genocide. These included: the seizing of power by an interim government directed by the hard-line "Akazu" clique; the liquidation of opposition Hutu politicians; the implementation of plans to carry out a genocide throughout the