“…The knowledge about the genetic history of prehistoric Europeans has increased substantially during the past three years following a series of studies that have provided new insights about the ancestry and affinities of Neolithic, Chalcolithic and Bronze Age populations from various parts of Europe 1 – 19 . Recent ancient DNA (aDNA) genome-wide studies have particularly addressed the extent of genetic admixture between Neolithic farmers and hunter-gatherers (HG) and found evidence of regional variability in the level and nature of the admixture in Iberia 5 , 9 , 19 , 20 , south-east 6 , 10 , 13 , 16 , central 1 , 2 , 7 , 15 , north-eastern 4 , 6 , 14 , and northwestern Europe 5 , 8 . In regions such as the Baltic, however, genomic data has shown that hunter-gatherer populations adopted farming without a significant genetic input from farming populations 14 .…”