New Human DNA Strain Detected

[Minimalist]

restricted to Africa....whereas Neandertal was restricted to Europe.

http://www.startribune.com/world/163962986.html?refer=y

The human family tree just got another mysterious branch, an African "sister species" to the heavy-browed Neanderthals that once roamed Europe.

While no fossilized bones have been found from these enigmatic people, they did leave a calling card in present-day Africans: snippets of foreign DNA.

There's only way one that genetic material could have made it into modern human populations. "Geneticists like euphemisms, but we're talking about sex," said Joshua Akey of the University of Washington in Seattle, whose lab identified the foreign DNA in three groups of modern Africans.