Genetic Detectives 

Want to find out where you fit on the human family tree? The UA's Human Origins Genotyping Laboratory is on the case

Matt Kaplan and I go way back—some 10,000 years or so, according to our common Y chromosome. Kaplan, the director of research at the UA's Human Origins Genotyping Laboratory, and I are both members of Y chromosome haplogroup J2 (M172), which means…

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