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2h ago

Ancient DNA Study Uncovers 8,500-Year-Old Central Argentine Lineage Still Present Today

Genome-wide analysis across 310 individuals maps long-term local continuity with region-specific mixing across the Southern Cone.

Nicolás Pastor y Rodrigo Nores, autores del trabajo e investigadores en el Idacor (Conicet-UNC)
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El estudio tuvo resultados sorprendentes que modifican en parte lo que sabemos de nuestro país.
Científicos del CONICET identificaron un nuevo linaje genético en el centro de Argentina.

Overview

  • Peer-reviewed results in Nature, led by CONICET/Idacor with Harvard collaborators, document a previously unknown genetic lineage centered in Argentina.
  • The lineage traces to an individual from Córdoba dated to about 8,500 years ago and remains detectable in present-day inhabitants of central Argentina.
  • The decade-long project expanded from 29 teeth to 344 samples from 310 individuals across 133 archaeological sites, enabling genome-scale resolution.
  • Findings indicate continuous local evolution without wholesale population replacement, alongside admixture with neighboring ancestries over millennia.
  • Analyses infer three interregional movements involving this ancestry: into northwest Argentina mixing with an Andean component, into the Pampas becoming dominant roughly 800 years ago, and into the Gran Chaco mixing with an Amazonian component.