Overview
J1-Y6772 is a downstream lineage of the Arabian-centered J1-P58 radiation and is thought to have emerged among pastoral groups inhabiting northern Arabia during the early Bronze Age. These populations relied on desert-steppe herding cycles organized around key wells, transient water channels and clusters of small oases. Their mobility patterns reflect the early demographic structures that shaped the North Arabian cultural zone and contributed to the later formation of historic tribal configurations. Throughout the Bronze and Iron Ages, populations carrying Y6772 expanded across the Hejaz and the arid plateau stretching into southern Jordan. Genetic signatures suggest several localized founder events that stabilized clan-based structures in these regions. With the expansion of the early Islamic world, downstream lineages migrated toward Iraq and the Gulf, undergoing additional microbranch formation driven by population growth in urban and semi-nomadic contexts.