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
Rwandan genocide government blocked "Inyenyeri News", "The Rwandan", and "Le Prophete." In a documentary, BBC mentioned that a significant number of Hutus were killed and discussed theories of the RPF shooting down the president's plane. In response to the documentary, the Rwandan government shut down BBC in the local to BBC promoting a "revisionist" position on the genocide in a documentary. While before the genocide, Rwandan history textbooks would acknowledge and highlight differences between Tutsi and Hutu people, today, the only government approved Rwandan history textbook stresses the Rwandans as one people and virtually ignore the ethnic differences and pre-genocide conflicts. Furthermore,