http://www.usatoday.com/tech/science/genetics/2006-02-01-dna-african-americans_x.htm
About 30% of black Americans who take DNA tests to determine their African lineage prove to be descended from Europeans on their father’s side, says Rick Kittles, scientific director of African Ancestry, a Washington, D.C., company that began offering the tests in 2003. Almost all black Americans whom Kittles has tested descended from African women, he says.
That’s partly why genetic genealogy is “not for the faint-hearted,” says Melvyn Gillette, a member of the African American Genealogical Society of Northern California and a longtime family researcher.
“Before you go opening any door, you need to ask, ‘Am I really ready for what might be behind it?’ ” Gillette says. “Not everyone is.”
