Back to the beginning

Identity is a mix of genetics and culture, and most of us think we know who we are -- but do we really? With the advent of the latest technology, some people are testing their DNA to get at that most personal of truths -- their ancestry. The journey can be as frustrating and rewarding as the result. "Weekend America" host Bill Radke talks to Christopher Rabb of Philadelphia and Sonya Loya of Ruidoso, New Mexico about how DNA testing and genealogical research shapes our identity.