The genetic profile of Poland_Milicz_IA (12 samples) is compact but revealing. Mitochondrial DNA is dominated by haplogroup U (5/12), with single instances of H, H48, W6a and T. Haplogroup U lineages are commonly associated with long-standing European maternal ancestries — in some regions tracing to Mesolithic and Neolithic substrate populations — suggesting maternal continuity in this Silesian community.
On the paternal side the dataset is unconventional for northern-central Europe: four males carry Y-haplogroup L, while single samples belong to P, CTS and YP-associated branches. Haplogroup L is today more frequent in South and Central Asia; its presence here, if confirmed by broader sampling and robust phylogenetic placement, could indicate localized male-mediated gene flow, rare migration events, or complexities in paternal lineage survival. Given the modest sample size, alternative explanations (such as ancestral substructure, post-depositional issues, or statistical fluctuation) cannot be excluded. Further sequencing, expanded sampling from nearby sites, and direct comparison to contemporaneous populations in Silesia and neighboring regions are needed to assess the significance of L's frequency.
Genetic diversity within the group implies a community shaped by both deep local maternal roots and a more variegated paternal history. Archaeogenomic integration — pairing radiocarbon, archaeological context and genome-wide data — will be essential to move from intriguing signals to robust narratives.