With support from the University of Richmond

History News Network

History News Network puts current events into historical perspective. Subscribe to our newsletter for new perspectives on the ways history continues to resonate in the present. Explore our archive of thousands of original op-eds and curated stories from around the web. Join us to learn more about the past, now.

Tracing Ancestry, Researchers Produce a Genetic Atlas of Human Mixing Events

The rise and fall of empires, the march of armies, the flow of trade routes, the practice of slavery ā€” all these events have led to a mixing of populations around the world. Such episodes have left a record in the human genome, but one that has so far been too complex to decipher on a global scale.

Now, geneticists applying new statistical approaches have taken a first shot at both identifying and dating the major population mixture events of the last 4,000 years, with the goal of providing a new source of information for historians.

Some of the hundred or so major mixing events they describe have plausible historical explanations, while many others remain to be accounted for. For instance, many populations of the southern Mediterranean and Middle East have segments of African origin in their genomes that were inserted at times between A.D. 650 and 1900, according to the geneticistsā€™ calculations. This could reflect the activity of the Arab slave trade, which originated in the seventh century, and the absorption of slaves into their host populations....

Read entire article at New York Times