Unveiling East Asian ancestry through Middle Neolithic genomes

Area of Science:

• Archaeogenetics
• Population Genetics
• Ancient DNA Studies

Background:

• The expansion of agriculture, particularly millet and rice farming, profoundly shaped human societies across Asia and the Pacific.
• Understanding the genetic origins and dispersal patterns of early farmers is crucial for reconstructing population histories.

Purpose of the Study:

• To investigate the genetic landscape of East Asian agriculturalists during the Middle Neolithic.
• To identify distinct ancestries contributing to the spread of farming practices.
• To examine the migratory routes and interactions of these ancestral groups.

Main Methods:

• Analysis of ancient genomes from key Neolithic sites in East Asia.
• Application of population genetic methods to infer ancestry and admixture.
• Comparison of genomic data with archaeological and linguistic evidence.

Main Results:

• Identification of three primary East Asian farmer ancestries.
• Reconstruction of their migration patterns throughout the Middle Neolithic.
• Evidence of interactions and admixture between these diverse ancestral groups.

Conclusions:

• The spread of East Asian agriculture involved complex movements of multiple farmer ancestries.
• These findings necessitate an updated model of the farming/language dispersal hypothesis.
• Ancient genomics provides powerful insights into the deep history of human populations and cultural diffusion.