New research suggests humans didn’t come from a single ancestral group in Africa, but from several populations that mixed over long periods. Credit: AI/ScienceDaily.com A sweeping genetic analysis is challenging one of the simplest versions of the human origin story: the idea that all modern humans arose from a single ancestral population in Africa. Instead, the research points to a more intricate beginning, with early human groups spread across Africa, mixing for long stretches of time before

Tag-uri: DNA