Overview
J1-Y6392 is a downstream derivative of the Arabian-centered J1-P58 radiation and likely formed among pastoral populations occupying the northern Arabian plateau during the early Bronze Age. These ancestral communities moved seasonally between grazing zones organized around wells, wadis and small oases, creating the mobility systems that underpinned early North Arabian tribal formation. Their archaeological horizon includes light seasonal encampments, caravan-linked rest points and early fortified oasis nodes. During the Bronze and Iron Ages, Y6392-bearing groups contributed to population movements shaping the Hejaz, Wadi Sirhan and southern Jordan regions. Founder effects observed in the phylogeny indicate early consolidation into stable clan structures. In the early Islamic period, additional dispersal carried downstream lineages into Iraq and the Gulf, where region-specific microbranches emerged.