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
Religion in Rwanda to support the new interim government, the very government supporting the genocide. At the same time, churches did not uniformly support the genocide. In the period leading up to the genocide, 1990–1994, major splits emerged within most churches between moderates who promoted democratic change and conservatives allied with the Habyarimana regime. Many of the clergy were Tutsi, and they generally supported democratic reform, but many moderate Hutu within the churches supported reform as well. Churches provided major support to the formation of the new human-rights groups that emerged in the early 1990s. When the genocide began in 1994, some clergy