New genetic data show that the Sandawe and southern African click speakers share rare mtDNA and Y chromosome haplogroups.
http://mbe.oxfordjournals.org/content/24/10/2180.long
These populations are considered to be some of the most ancient human lineages. Some stretches of DNA sequence (~2.5 % of the genome) from these populations do not look like any other human sequence decoded until now, and this hints at an admixture with an ancient African ancestor, now extinct, possible the African equivalent of the European Neanderthals.
The Hadza People Facts
The Hadza people are testimony to some of the oldest living tribal hunting gathering ways. With a population well under one thousand, the Hadza people have never known cultivation or settled live stock breeding. Not to forget those ten thousand years of their being which passed without the use of any calendar at all. Observing the hunter gatherer tribes of Africa one could mark the Hadza as the last of active hunting gathering tribes. This isolated tribe is spread over four distinct zones. West of south Lake Eyasi, an area between the span of Lake Eyasi and the Yaeda Valley swamp, in the Mbulu Highlands, and close to the town of Mang'ola. By the observing the DNA, one could not relate the Hadza with any generally known pool or tribe other than the Pygmies.
The Hadza are not closely genetically related to any other people.
The Hadza do not engage in warfare. They've never lived densely enough to be seriously threatened by an infectious outbreak. They have no known history of famine; rather, there is evidence of people from a farming group coming to live with them during a time of crop failure. The Hadza diet remains even today more stable and varied than that of most of the world's citizens. They enjoy an extraordinary amount of leisure time. Anthropologists have estimated that they "work"—actively pursue food—four to six hours a day. And over all these thousands of years, they've left hardly more than a footprint on the land.
http://en.wikipedia.org/wiki/Hadza_people
Khoisans(bushmen)
Khoisans People facts
The surprising outcome of the comparison between an admixture-neutral and an admixture-corrected trees is that Khoisans are not a “basal population” anymore. They are further removed from the chimp-human node than Pygmies, Hadza as well as the branch that includes Dinka, Yoruba, Europeans and East Asians. This is true even for the least admixed Ju’hoan Bushmen.
http://anthropogenesis.kinshipstudies.org/2012/07/khoisans-are-genetically-admixed-and-not-basal-to-other-humans-hadza-are-recently-admixed/
http://en.wikipedia.org/wiki/Khoisan
http://mbe.oxfordjournals.org/content/24/10/2180.long
These populations are considered to be some of the most ancient human lineages. Some stretches of DNA sequence (~2.5 % of the genome) from these populations do not look like any other human sequence decoded until now, and this hints at an admixture with an ancient African ancestor, now extinct, possible the African equivalent of the European Neanderthals.
The Hadza People Facts

The Hadza people are testimony to some of the oldest living tribal hunting gathering ways. With a population well under one thousand, the Hadza people have never known cultivation or settled live stock breeding. Not to forget those ten thousand years of their being which passed without the use of any calendar at all. Observing the hunter gatherer tribes of Africa one could mark the Hadza as the last of active hunting gathering tribes. This isolated tribe is spread over four distinct zones. West of south Lake Eyasi, an area between the span of Lake Eyasi and the Yaeda Valley swamp, in the Mbulu Highlands, and close to the town of Mang'ola. By the observing the DNA, one could not relate the Hadza with any generally known pool or tribe other than the Pygmies.
The Hadza are not closely genetically related to any other people.
The Hadza do not engage in warfare. They've never lived densely enough to be seriously threatened by an infectious outbreak. They have no known history of famine; rather, there is evidence of people from a farming group coming to live with them during a time of crop failure. The Hadza diet remains even today more stable and varied than that of most of the world's citizens. They enjoy an extraordinary amount of leisure time. Anthropologists have estimated that they "work"—actively pursue food—four to six hours a day. And over all these thousands of years, they've left hardly more than a footprint on the land.
http://en.wikipedia.org/wiki/Hadza_people
Khoisans(bushmen)
Khoisans People facts

The surprising outcome of the comparison between an admixture-neutral and an admixture-corrected trees is that Khoisans are not a “basal population” anymore. They are further removed from the chimp-human node than Pygmies, Hadza as well as the branch that includes Dinka, Yoruba, Europeans and East Asians. This is true even for the least admixed Ju’hoan Bushmen.
http://anthropogenesis.kinshipstudies.org/2012/07/khoisans-are-genetically-admixed-and-not-basal-to-other-humans-hadza-are-recently-admixed/
http://en.wikipedia.org/wiki/Khoisan