Sero-genetic studies on the G/wi and G//ana San of Botswana.

The G/wi and G//ana San ('Bushmen') of the Central Kalahari Reserve, Botswana, live as cyclically migrant hunter-gatherer bands. They have some contact with one another, with the Negro Kgalagadi, and with White farmers near Ghanzi. Studies carried out on samples of these peoples from the Okwa Valley reveal a sero-genetic profile characteristic of the San in general, deviant from that of the Khoi ('Hottentots') and quite different from that of the Negroes. These findings help to substantiate the claim that the Khoisan peoples should be regarded as one of the major divisions of mankind and not simply as having comparatively recently evolved from a common stock with the Negroes.