Dzo Dzo A dzo (Tibetan མཛོ་ mdzo) (also spelled zo, zho and dzho) is a hybrid between the yak and domestic cattle. The word dzo technically refers to a male hybrid, while a female is known as a "dzomo" or "zhom". In Mongolian it is called khainag (хайнаг). There is also the English language portmanteau term of yattle, a combination of the words yak and cattle, as well as yakow, a combination of the words yak and cow. Dzomo are fertile (or, fecund) while dzo are sterile. As they are a product of the hybrid genetic phenomenon of heterosis (hybrid vigor),
Oryza glaberrima conditions, filling, and has a distinct nutty flavour. It is also grown for cultural reasons; for instance, it is sacred to awasena followers among the Jola people, and is a heritage variety in the United States. Crossbreeding between African and Asian rice is difficult, but there exist some crosses. Humans have independently domesticated two different rice species. African rice was domesticated from wild African rice, "Oryza barthii", while Asian rice ("Oryza sativa"), was domesticated from wild Asian rice, "Oryza rufipogon". "Oryza barthii" still grows wild in Africa, in a wide variety of open habitats. The Sahara was formerly wetter, with