What is skeptical observers' opinion on ancestry testing?

持怀疑态度的观察者们对血统检测的看法是什么？

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"There is a kind of false precision being hawked by people claiming they are doing ancestry testing, " says Trey Duster, a New York University sociologist.

纽约州立大学的社会学家特洛伊·达斯特说，“那些声称可以进行血统检测的人，他们兜售的测试有一定的不准确性”。

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While ancestry testing can be an important tool, researchers say its limitations must be recognised.

BBC: Painting a suspect's portrait with DNA

Gates began with the television program, "African American Lives, " back in 2006 when he used research and DNA testing to trace the ancestry of such prominent African Americans as Oprah Winfrey and Quincy Jones.

NPR: Scholar Helps Black Americans Trace Family Roots