Genetic data for Bulgaria_EBA_Ezero is extremely limited: only two individuals sampled from Sabrano (Nova Zagora). Of these, one carries mitochondrial haplogroup K; Y-chromosome lineages were not reported for these samples. Because the sample count is so small (<10), any genetic inference must be treated as preliminary.
Mitochondrial haplogroup K is associated in many studies with lineages that spread into Europe during and after the Neolithic farmer expansions; its presence in an Ezero-era individual is consistent with maternal continuity from earlier farming populations in the Balkans. However, a single mtDNA match cannot reveal the population-wide balance of ancestries. Archaeological data indicates continuity in settlement and material culture from Chalcolithic farmers, which could align with predominant farmer-derived ancestry, but regional Early Bronze Age contexts elsewhere in the Balkans show variable steppe-related admixture emerging in this period. Without reported Y-DNA or genome-wide autosomal data for these two Sabrano samples, we cannot assess male-mediated migrations, admixture proportions, or kinship patterns.
In sum: the mtDNA K result is informative at the individual level and compatible with farmer-lineage persistence, but broader demographic claims for the Ezero assemblage require many more genomes from well-contextualized graves.
