Overview
G-FT78142 is a historically emergent lineage whose demographic amplification took place during the late Roman and early medieval transformations of southern and central Europe. While deriving ancestrally from Anatolian G2a2b1a roots, this branch aligns with the movement of eastern Mediterranean genetic signatures into European populations engaged in the logistic-military networks of the empire. Its structure shows signs of localized founder effects tied to late Roman administrative centers, military garrisons, trade stations and post-Roman successor polities.
The lineage reflects the demographic reshaping of Europe in the late first millennium CE, when smaller paternal lines from the eastern Mediterranean were absorbed into expanding local populations.
Geographic distribution
Modern carriers appear in Italy, Slovenia, Croatia, Austria, southern Germany and occasionally France. The lineage is sparsely represented in the Balkans east of the Vardar–Morava axis, supporting a westward demographic integration pattern rather than a Balkan-centered origin.
Ancient DNA
- Late Roman individuals from northern Italy and the upper Adriatic display upstream marker constellations associated with this lineage.
- Early medieval central European burials show partial SNP congruence with downstream FT78142 clusters.
- Isolated late antique samples from the Dalmatian coast reveal STR signatures compatible with early phase FT78142 divergence.
Phylogeny & subclades
FT78142 branches into two primary lines: a northern Italian–Alpine clade and a central European derivative. A smaller Adriatic microbranch exists as well. Divergence dates align with late Roman administrative disintegration and subsequent early medieval regionalization.
- G-FT78142* northern Italian–Alpine basal clade
- G-FT78142a central European derived branch
- G-FT78142b Adriatic coastal microcluster
- rare western European offshoots linked to medieval migration
Notes & context
This lineage is crucial for capturing the post-Roman demographic synthesis period when eastern Mediterranean paternal lines integrated into European genetic landscapes.
References & external links