How Mixed Are African Americans?

(The Root) — 100 Amazing Facts About the Negro No. 18: How much African ancestry does the average African American have?

A few years ago, it occurred to me that it might be fun to try to trace the family trees of a group of African Americans all the way back to slavery, and then when the paper trail disappeared, analyze their DNA through biologist Rick Kittles‘ company,

via How Mixed Are African Americans?.