Dark history of transatlantic slavery traced through DNA study

A new DNA study published Thursday sheds fresh light on the horrors of the transatlantic slave trade, from the legacy of rape that can be seen in today's genetics to how disease likely decimated some groups forced to work in deadly conditions. The grim results from a paper, which appeared in the American Journal of Human Genetics, compiled genetic data from 50,000 consenting research participants from both sides of the Atlantic. It cross-referenced these with detailed records from slave ships that transported 12.5 million men, women and children between 1515 and 1865.

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