Overview
J2a-FGC17865 is a downstream branch of the coastal-oriented J2a-Z2227 radiation and reflects demographic processes tied to the eastern Mediterranean littoral. Its early formation corresponds to the rise of maritime-linked agricultural and artisanal communities in Cyprus, southwestern Anatolia and the southern Levant. Archaeogenetic patterns suggest connections between island-based settlements, coastal Anatolian port communities and broader maritime trade networks active throughout the Chalcolithic and Bronze Age. During the Bronze Age, FGC17865-bearing groups participated in the copper trade, maritime redistribution systems and coastal urbanization processes characteristic of the eastern Mediterranean. The lineage exhibits downstream diversity consistent with multiple localized founder effects in island and coastal populations, reflecting persistent demographic presence through later classical and Roman periods.