PerspectiveHuman Genetics

Mapping Human History

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Science  20 Dec 2002:
Vol. 298, Issue 5602, pp. 2342-2343
DOI: 10.1126/science.1080373

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Analyzing genetic markers in the DNA of individuals from different parts of the world can reveal the migrations of our ancestors. In their Perspective, King and Motulsky discuss a new statistical analysis that-without using prior information about individuals' origins-identifies genetic clusters corresponding to five major geographic regions of the world (Rosenberg et al.). The same analysis confirms that more than 90% of human genetic variation is within populations rather than among groups.