Comment by ipaddr

"Their conclusions were that while almost all African Americans are racially mixed, and many have family stories of Native heritage, usually these stories turn out to be inaccurate, with only 5 percent of African American people showing more than 2 percent Native American ancestry. Gates summarized these statistics to mean that, "If you have 2 percent Native American ancestry, you had one such ancestor on your family tree five to nine generations back (150 to 270 years ago)." Their findings also concluded that the most common "non-black" mix among African Americans is English and Scots-Irish."