THE GRIO : SOUTHERN WHITES and BLACK DNA by Blue Telmusa full article and map
EXCERPT: The findings published this month in the American Journal of Human Genetics found that whites in the South were far more likely to have black ancestry than any other part of the country.
Researchers examined 145,000 DNA samples provided to genetic testing company 23andme for ancestry analysis. They have now determined that at least six million Americans who called themselves white had at least 1 percent African ancestry.
South Carolina and Louisiana ranked highest on the list. Researchers found that one in 20 people who called themselves white in those states had at least 2 percent African ancestry. And in a lot of the South, about 10 percent of people who identified as white turned out to have African DNA as well.
