Overview
J1-Y7134 is a downstream derivative of the Arabian-rooted J1-P58 lineage and likely emerged among early Bronze Age pastoral groups in northern Arabia. These populations relied heavily on desert wells, intermittent wadis and oasis-linked grazing networks that shaped predictable seasonal mobility. Their early demographic structure aligns with the formation of ancestral North Arabian tribal communities. During the Bronze and Iron Ages, groups carrying Y7134 expanded across regions connecting the Hejaz, Wadi Sirhan and southern Jordan. The downstream phylogeny displays clear founder-driven episodes that stabilized clan identities. With the spread of the early Islamic world, Y7134 lineages extended into Iraq and the Gulf, where downstream diversification formed region-specific microbranches.