Study shows 4,000-year battle of Eastern and Western genes in China’s heartland

A comprehensive ancient genomics study conducted in China's Ningxia region has uncovered evidence of a 4,000-year-long intermingling of Eastern and Western genes. Researchers from Fudan University, in collaboration with local institutions, analyzed genetic data from 89 ancient skeletal remains, yielding 69 high-quality genomic datasets spanning from approximately 4,245 to 301 years ago.

The study, published in Nature Communications, highlights Ningxia's historical role as a crossroads between the Eurasian steppe and Chinese farmlands. It reveals that human genes from both the East and the West have fused in this area through centuries of conflict and trade. The findings indicate that Han Chinese genes, predominantly carried by males, began entering Ningxia on a large scale around 127 BC, during the Han dynasty.

Genetic analysis of 22 skeletons from the Han dynasty period showed that the majority clustered genetically with populations from the Yellow River basin, suggesting a significant influx and integration of Han Chinese farmers into the region. This research provides a detailed genetic timeline of population movements and interactions in China's heartland over millennia.