A · A1 · A1b · A1b1 · BT · CT · CF · F · G · G1 · G1a · G1a6
G-Y32300
G1a6 is a highly regionally stable branch of the G1a radiation, reflecting Bronze Age and Iron Age continuity across western Iran and the upper Mesopotamian corridor. Its demographic pattern suggests inheritance through semi-sedentary agro-pastoral communities that maintained cultural cohesion across the Zagros foothills.
Most common in the western Iranian Plateau—Luristan, Kermanshah, and Hamadan—plus small pockets in northern Iraq and eastern Turkey. It remains one of the clearest Iranian-centered G1 signatures.
G1a6 is defined by Y32300 and forms a sister node alongside G1a3, G1a4 and G1a5. It contains several minor micro-regional subbranches that correspond to long-term tribal and linguistic continuity in western Iran.
G1a6 is key for mapping paternal ancestry within western Iran and provides continuity signals useful for modeling Iranian-speaking population formation.