The Bright Hub
According to a study released in the magazine Science Express in April 2009, global genetic variations between populations define the origin of the species. These human genetic variations between DNA markers are most prominent among the population of sub-Saharan Africa. The ten-year study of African and non-African populations traced human origins to 14 distinct ancestral groups descending from Namibia and Angola. It appears that populations migrated from these areas, eventually leaving the continent through East Africa. As this occurred, genetic diversity lessened amongst populations. This supports the Out of Africa theory of human origins.