Origins of Hutu, Tutsi and Twa adults has a high capacity for lactose digestion, a surprisingly high number for an agrarian people, which Mamdani suggests may be the result of centuries of intermarriage with Tutsi. Bethwell Ogot in the 1988 UNESCO "General History" further notes that the number of pastoralists in Rwanda increased sharply around the fifteenth century. Although Luis et al. (2004) in a more general study on bi-allelic markers in many African countries found a statistically significant genetic difference between Tutsi and Hutu, the overall difference were not large. Modern-day genetic studies of the Y-chromosome generally indicate that the Tutsi, like the Hutu, are
Hutu Ten Commandments imprisonment. The Hutu Ten Commandments 1. Every Hutu should know that a Tutsi woman, whoever she is, works for the interest of her Tutsi ethnic group. As a result, we shall consider a traitor any Hutu who 2. Every Hutu should know that our Hutu daughters are more suitable and conscientious in their role as woman, wife and mother of the family. Are they not beautiful, good secretaries and more honest? 3. Hutu women, be vigilant and try to bring your husbands, brothers and sons back to reason. 4. Every Hutu should know that every Tutsi is dishonest in business.