A breakthrough paleogenomic study led by the Institute of Anthropological Genetics has identified a unique genetic adaptation in 4,000-year-old human remains from the Qilian Mountains. The analysis revealed a strong selective sweep on the FADS (Fatty Acid Desaturase) gene cluster, which is associated with the efficient processing of high-fat, animal-based diets common in high-altitude, cold-arid environments.
This research suggests that early populations along the proto-Silk Road routes developed specialized metabolic resilience to survive the extreme nutritional stressors of the mountain corridors. The findings provide a new window into how prehistoric migrations were facilitated by rapid biological adaptations to localized environmental niches, predating the establishment of large-scale pastoralist networks in the region.