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metal prints pattern metal prints map metal prints early human metal prints migration metal prints homo sapiens metal prints evolution metal prints modern human metal prints africa metal prints recent metal prints out of africa metal prints model metal prints rao metal prints spread metal prints population metal prints neanderthal metal prints

photographs pattern photos map photos early human photos migration photos homo sapiens photos evolution photos modern human photos africa photos recent photos out of africa photos model photos rao photos spread photos population photos neanderthal photos

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Human genetic map. Many human populations carry genetic markers which can be traced back through generations. This can produce a genetic tree and the diverse branches can be followed back to a common African root. On the map the blue arrows represent human migration routes based on evidence from Y-chromosome markers (passed down from father to son) and the brown arrows represent migration routes based on mitochondrial DNA markers (passed down from mother to child, both male and female). It appears that members of one branch of Homo sapiens left Africa around 100,000 years ago, and spread out across the continents.

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