Two archaeological sites in Brazil are revealing the genetic ancestry of some of the continent’s earliest humans.
In addition to the ancient human genomes featured in the analysis, the team looked at present-day worldwide genomes and DNA sequences taken from Denisovan and Neanderthal remains from Russia.
Perhaps most intriguingly, the analysis revealed chunks of Neanderthal and Denisovan DNA in the ancient South American genomes, as well as Australasian signals in the remains of one individual from Panama. The Australasian signal was previously detected in ancient remains in southeastern Brazil and is present today in the Sirui people of Amazonia.
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