Overview
G-FT55783 is a lineage whose demographic trajectory links the Anatolian plateau with the Black Sea and Aegean coastal zones. The lineage likely experienced a founder event during late antiquity or the early Byzantine era, a period marked by heightened coastal trade, military realignments and population resettlements. While its ancestral root lies in the older Anatolian M406 strata, FT55783’s demographic rise took place largely in coastal and river delta environments.
Its structure reflects communities integrated into classical and Byzantine maritime systems, including merchant groups, coastal agricultural settlements and military populations stationed along strategic routes of the empire.
Geographic distribution
Modern carriers of FT55783 appear in western Turkey, northern Turkey along the Black Sea coast, Greece (particularly Thessaly and Macedonia) and Bulgaria. Smaller signals appear in Italy and Cyprus. The lineage is typical of populations living along the northern Aegean and southern Black Sea maritime interface.
Ancient DNA
- Hellenistic and Roman era individuals from the Black Sea coastal colonies show upstream SNP signals near the FT55783 ancestral level.
- Byzantine burials from western Anatolia present STR and SNP combinations consistent with early FT55783 derived structures.
- Early medieval Balkan individuals exhibit markers matching the downstream European arm of this lineage.
Phylogeny & subclades
FT55783 splits into two core clusters: a western Anatolia and Black Sea cluster, and a northern Aegean-Balkan branch. Divergence times point to the classical and Byzantine periods. The phylogeny fits a pattern of coastal founder events with moderate expansion and subsequent stabilization.
- G-FT55783* western Anatolian core
- G-FT55783a Black Sea coastal branch
- G-FT55783b northern Aegean and Balkan offshoot
- rare Italian and Cypriot microlineages
Notes & context
This lineage strengthens the atlas’s representation of classical and Byzantine maritime diffusion of G2a2b1a ancestry, complementing Mediterranean and highland branches with a coastal Black Sea-Aegean oriented pattern.
References & external links