Genetic tests that claim to pinpoint a person's tribal identity may not be accurate, according to a recent British study.

Based on the DNA of African-Americans, researchers found that fewer than 10 percent could be traced to an actual tribe or ethnic group in Africa. A much larger number, 40 percent, couldn't be matched at all, according to the study.

At best, researchers say the DNA tests can point to a certain region in Africa.

Get the Story:
Out of Africa -- but From Which Tribe? (The Washington Post 10/19)
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