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
Islam in Rwanda the Rwandan Genocide of 1994, Muslims were held in low regard, because they were seen as traders, in a land where farmers are highly regarded. The Muslim population before the genocide was 4% which was unusually low compared to that of neighbouring countries. Muslims were also affected by the genocide. There were only a few incidents in which Tutsis in mosques were attacked. The most widely known example occurred at Nyamirambo Main Mosque, where hundreds of Tutsi had gathered to take refuge. The refugees in the mosque fought off Hutu militias with stones, bows and arrows, putting up stiff resistance