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The National Geographic Society research on the Genographic Project is a genetic analysis of the human species origin in Africa and its spread throughout the world. Using samples, the lab results tell a story of the many branchings of the human tree. From the mitochondrial DNA, the researchers found that everyone in the world descends from one women in Africa some 150,000 to 200,000 years ago, while using the Y-chromosome they found we all descend from one man some 70,000 years ago. Mutations created branches through time in both areas and these are used to show the basic migration routes for the people, through their genes. --Dr. Wm Hampton Adams ormat: Color, DVD, Full Screen, Widescreen, Language: English, Number of discs: 1, Rated: NR (Not Rated), National Geographic (2009), Run Time: 90 minutes.