In testing the genetic material of current populations in Africa and comparing it against existing fossil evidence of early Homo sapiens populations there, researchers have uncovered a new model of human evolution - overturning previous beliefs that a single African population gave rise to all humans. New model for human evolution suggests Homo sapiens arose from multiple closely related populations.Ī new study in Nature challenges prevailing theories, suggesting that Homo sapiens evolved from multiple diverse populations across Africa, with the earliest detectable split occurring 120,000-135,000 years ago, after prolonged periods of genetic intermixing. Contrary to some previous models, this research implies that contributions from archaic hominins were unlikely to have significantly affected Homo sapiens’ evolution. The research suggests that the earliest detectable split in early human populations occurred between 120,000 to 135,000 years ago, after long periods of genetic intermixing, and that subsequent migrations created a weakly structured genetic stem. This conclusion was reached after researchers analyzed genetic data from present-day African populations, including 44 newly sequenced genomes from the Nama group of southern Africa. A new model for human evolution asserts that modern Homo sapiens stemmed from multiple genetically diverse populations across Africa rather than a single ancestral population.

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