'Rick Kittles, an associate professor of genetic medicine at the University of Chicago, said Watson's remarks aren't backed by science.

"It's a rather ignorant statement from an intelligent man," said Kittles, who is also scientific director of African Ancestry Inc., which helps African-Americans trace their genetic heritage. "Unfortunately, when a Nobel laureate says Africans are less intelligent than Europeans, the average person on the street runs with it. That's the sad part."'