“BUSHMEN” – “SAN” – tHE INDIGENOUSPEOPLE OF sOUTHERN AFRICA: (ZIMBABWE, LESOTHO, MOZAMBIQUE, SWAZILAND, BOTSWANA, NAMIBIA, AND ANGOLA) referred to by 19th century white racists as BUSHMEN, SAN, SHO, BASARWA, KUNG, OR KHWE –
Various chromosome studies showed that the San carry some of the most divergent (oldest) Y-chromosome haplogroups. These haplogroups are specific sub-groups of haplogroups A and B the two earliest branches on the human Y-chromosome tree.
…Mitochondrial DNA studies also showed evidence that the San carry high frequencies of the earliest haplogroup branches in the human mitochondrial DNA tree. The most divergent (oldest) mitochondrial haplogroup LOd, has been identified at its highest frequenciesin the southern African San groups. …
In a study published in March 2011 Brenna Henn and colleagues found that the Khomani Bushmen as well as the Sandae and Hadza peoples of Tanzania were the most genetically diverse of any living humans studies. THIS HIGH DEGREE OF GENETIC DIVERSITY HINTS AT THE ORIGIN OF ANATOMICALLY MODERN HUMANS.