Origins of Hutu, Tutsi and Twa of neighboring people, it was almost non-existent among Rwandan Tutsi. Presence of the sickle cell trait is evidence of survival in the presence of malaria over many centuries, suggesting differing origins. Regional studies of the ability to digest lactose are also supportive. The ability to digest lactose among adults is widespread only among desert-dwelling nomadic groups that have depended upon milk for millennia. Three quarters of the adult Tutsi of Rwanda and Burundi have a high ability to digest lactose, while only 5% of the adults of the neighboring Shi people of eastern Congo can. Among Hutu, one in three
Role of France in the Rwandan genocide Hutu militia members; it accused 33 senior French military and political officials of involvement in the genocide, including then-President Mitterrand and his then general secretary Hubert Védrine, then-Prime Minister Edouard Balladur, then-Foreign Minister Alain Juppé, and his chief aide at the time, Dominique de Villepin. A statement accompanying the release claimed that "French soldiers themselves directly were involved in assassinations of Tutsis and Hutus accused of hiding Tutsis ... French forces committed several rapes on Tutsi survivors", though the latter was not documented in the report. A BBC report commented that French Foreign Minister, Bernard Kouchner, denied French responsibility in