A recent study has shed some light on how the first Native Americans came to the Americas and how they spread to two different continents. The study comes from a detailed analysis of genetic material from living Native Americans, Siberians, and people who live around the Pacific Ocean, as well as genomes from 23 ancient North and South Americans.
The study reveals that the Native Americans came from Siberia. These ancient Americans have made their way from Siberia to the Americas in a single wave 23,000 years ago and stayed in the north for probably thousands of years before spreading southward. The study confirms the widely accepted theory of how the Native Americans made their way via a land bridge connecting Siberia and Alaska. This migration is distinct from the Eskimo and the Inuit, who came much later.
The study also shot down some previously held assumptions. This includes an earlier migration that predates the last glacial maximum and the idea that there were multiple independent migration waves that led to major subgroups of Native Americans today. The study also denies the idea that Native Americans are genetically linked to Europeans and Polynesians. One surprise in genetic data found that Native Americans have a mix of genes from varying sources such as East Asians and Austro-Melanesians.