Origins
Haplogroup J-M172 was until recently widely believed to be associated with the spread of agriculture from Mesopotamia (Iraq and Syria).
However, the main spread of J-M172 into the Mediterranean area is now thought to have coincided with the expansion of metallurgical people's during the Bronze Age." The age of J-M172 has been estimated as 15,000 +/- 20,000 years ago. Newer estimations based on Y-chromosome sequencing and a CT split 70,000 years ago, confirm the IJ split around 36,000 years ago, and place the J-M267/J-M172 split around 26,000 years ago. J-M172 distribution, centered in Western Asia and Southeastern Europe, its association with the presence of Neolithic archaeological artifacts, such as figurines and painted pottery, and its association with annual precipitation had been interpreted as evidence that J-M172, and in particular its J-M410 subclade belonged to the agricultural innovators who followed the rainfall. However, new genetic data would link the first farmers to haplogroup G Di Giacomo stressed the role of post-Neolithic migratory phenomenon, specifically that of the Ancient Greeks, as also being important in the dispersal of haplogroup J-M172.
Read more about this topic: Haplogroup J2 (Y-DNA)
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