A meta-analysis of ancient and present-day Central Eurasian genome data to revise archaic hominin ancestry

A recent study examining genetic data from ancient and modern Central Eurasian populations has shed new light on the region's archaic hominin ancestry. Central Eurasia, a crossroads of ancient human migration, has been underrepresented in such studies despite its crucial role in shaping the evolutionary history of Eurasian populations.

The research team analyzed the complete genome sequences of five individuals from the Early Bronze Age (EBA) and five present-day Central Eurasian individuals. They found that around 2.2% of the Central Eurasian genomes contain genetic material from Neanderthals and Denisovans, two well-known archaic hominins. This percentage remained relatively constant between the EBA and present-day populations, suggesting that the level of archaic introgression has remained stable over several thousand years.

Moreover, the distribution of these archaic genetic fragments across chromosomes also remained largely unchanged between the two time periods. The study identified putative genetic fragments that appear to have originated from the Altai Neanderthal and Altai Denisovan populations.

The findings indicate that while the overall level of archaic ancestry in Central Eurasians has remained relatively stable, larger genomic datasets will be needed to fully map the region's complex archaeological ancestry. This study provides a valuable framework for future research in the field.