Appearing 15,000 – 10,000 years ago, J2 was crucially involved in modern human development. The members originated in the Fertile Crescent and were the first farmers during neolithic times. The success of these people led to the rise of modern cities and settled communities.
Farming spurred growing population and M172 is the marker defining an important subset of this group. This group is associated genetically to the site of Jericho one of the world oldest agrarian societies. Successful migrations carried these people through the rivers of Central Asia and northern India. The group is commonly found in North Africa, southern Europe and the Middle East and in smaller frequencies in Italy and Spain.