Archaeology Anthropology Palaeontology Evolution Exhibitions Natural Heritage Astronomy Out of Africa and into an archaic human melting pot

A map showing where the ancestors of modern humans appear to have met and mixed
with archaic hominins [Credit: University of Adelaide]

Genetic analysis has revealed that the ancestors of modern humans interbred with at least five different archaic human groups as they moved out of Africa and across Eurasia.

While two of the archaic groups are currently known - the Neanderthals and their sister group the Denisovans from Asia ¬- the others remain unnamed and have only been detected as traces of DNA surviving in different modern populations. Island Southeast Asia appears to have been a particular hotbed of diversity.

Published in the Proceedings of the National Academy of Sciences, researchers from the University of Adelaide's Australian Centre for Ancient DNA (ACAD) have mapped the location of past "mixing events" (analysed from existing scientific literature) by contrasting the levels of archaic ancestry in the genomes of present-day populations around the world.

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