8legs: Javier maravall lópez

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This Ancient Argentine Lineage Survived 8,000 Years Without Mixing With Others

A new ancient DNA study analyzes 238 individuals to map South American ancestry.
By around 8,500 years ago, a distinct central Argentinian lineage emerged and stayed the region’s main ancestry for millennia.
The lineage remained largely isolated, showing surprisingly little interbreeding with neighboring populations.
Around 3,300 years ago, the central lineage began mixing with Pampas populations and became dominant there.
The study links genetic continuity with shifts in technology and settlement patterns over millennia.
Researchers used a large comparative dataset across the Americas to trace ancestry.
The central Argentine lineage remains a key ancestral component today in the region.
The study highlights a land area where human groups preserved local identities despite contact.
The findings challenge assumptions that post-migration South American populations mixed freely.
The research calls for broader DNA sampling to fill gaps between the Andes and the Atlantic.

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