No 'lost tribes' or aliens: what ancient DNA reveals about American prehistory

New genetics research settles questions about the peoples of Newfoundland and Labrador – and helps highlight what genetics can’t tell usGenetics research has transformed our understanding of human history, particularly in the Americas. The focus of the majority of high profile ancient DNA papers in recent years has been on addressing early events in the initial peopling of the Americas. This research has provided details of this early history that we couldn’t access though the archeological record. Collectively, genetics studies have shown us that the indigenous inhabitants of the Americas are descended from a group that diverged from its Siberian ancestors beginning sometime around 23,000 years before present and remained isolated in Beringia (the region of land that once connected Siberia and North America) for an extended period of time. When the glaciers covering North America melted enough to make the Pacific coast navigable, southward travel became possible, and patterned genetic diversity across North and South America reflects these early movements. Continue reading...

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