Geneticist David Reich explains how analyses made possible by technological advances show human history to be one of mixing, movement, and displacement.
Haplogroup Q-Y2197, also known as Haplogroup Q-M242, is a genealogical group of lineages defined by unique genetic markers present on the Y-chromosome. It's commonly found among populations in the United Kingdom and Ireland and is linked to the Marsh Arab population in Mesopotamia.
A new analysis of Indian genomes—the largest and most complete to date—helps untangle the groups' complex evolutionary history, uncovering a 50,000-year history of genetic mixing and population bottlenecks that shaped genetic variation, health and disease in South Asia.
