Cruciani et al 18 found this paragroup (at that time defined as haplogroup 117, or R-M173 * (xSRY 10831, M18, M73, M269)) to be present at high frequencies (up to 95%) in populations from northern ...

In this report, researchers led by Dr. Michael Hammer of the University of Arizona recognized the need to revisit the Y chromosome haplogroup tree and incorporate the latest data. "The YCC effort ...

In this report, researchers led by Dr. Michael Hammer of the University of Arizona recognized the need to revisit the Y chromosome haplogroup tree and incorporate the latest data. “The YCC ...