Study Finds 3 Denisovan Interbreeding Events in 177 Near Oceanian Genomes
Updated
Updated · ZME Science · Jun 16
Study Finds 3 Denisovan Interbreeding Events in 177 Near Oceanian Genomes
3 articles · Updated · ZME Science · Jun 16
Summary
Researchers sequenced 177 high-coverage genomes from 12 Near Oceanian populations and found the richest Denisovan DNA catalog yet, indicating ancestors of present-day Oceanians mixed with at least three distinct Denisovan-like groups.
Near Oceanian genomes carried about 2.5 times more archaic sequence per person than European genomes, and one group showed roughly 25 times more Denisovan ancestry than the average East Asian genome.
The data point to long isolation after settlement more than 42,000 years ago, preserving signals of ancient migrations, bottlenecks and repeated contact with extinct human relatives.
Researchers also identified 3,127 high-frequency archaic variants that alter gene expression, many tied to immunity, with other candidate regions linked to metabolism, fertility and skeletal development.
Published in Science, the study suggests Denisovans were several related populations rather than one group and highlights how Oceanian underrepresentation in biobanks may obscure medically relevant variants.
What health advantages did Oceanians inherit from interbreeding with three distinct Denisovan groups?
If modern humans carry genes from extinct relatives, are we a single species or a complex hybrid?
As genomic data becomes a corporate asset, how can indigenous populations safeguard their unique DNA from exploitation?
Three Waves of Denisovan Ancestry: Comprehensive Genomic Study Redefines Human History in Near Oceania
Overview
A groundbreaking study published in June 2026 has greatly advanced our understanding of human genetic history in Near Oceania. By sequencing the complete genomes of 177 individuals from 12 diverse populations and comparing them to over 1,200 genomes worldwide, researchers uncovered at least three distinct interbreeding events between the ancestors of Near Oceanian populations and Denisovan-like groups. This comprehensive analysis fills a long-standing gap in our knowledge, shedding new light on a previously understudied region and highlighting the vast geographical range of Denisovans. The findings reveal the complex genetic legacy that shapes modern populations in this area.