ScienceDaily (Mar. 27, 2012) — A study by The Genographic Project has found that the majority of all known ethnic Afghans share a unique genetic heritage derived from a common ancestral population that most likely emerged during the Neolithic revolution and the formation of early farming communities. Through detailed DNA analysis of samples from 27 provinces, the Genographic team found the inter-Afghan genetic variability to be mostly attributed to the formation of the first civilizations in the region during the Bronze Age.
The study finds these early civilizations may have differentially assimilated migrations and invasions, thereby increasing inter-population genetic differences and giving the Afghans a unique genetic diversity in Central Asia. Published recently in the journal PLoS ONE, the study was led by principal investigator Pierre Zalloua and Marc Haber, both of Genographic’s Middle Eastern regional center.
“Afghanistan embraces a rich diversity of multi-ethnic and multi-lingual communities. The goal of our study was to determine whether the various Afghan groups arose from a common population with different social systems but with the same genetic stock or whether cultural and ethnic differences were founded on already existing genetic differences,” said Zalloua.
“We knew that the Afghans were culturally diverse, but we were not sure if their DNA would give us any clues as to how they have evolved. We now know that major cultural evolutions and prehistoric technological advancements, followed later by migrations and conquests, have left traceable records in the Afghans’ DNA, giving us an amazing insight into the origin of this population,” said Haber.