Study of 27 Neanderthals Finds Higher Diversity, No Recent Human Gene Flow
Updated
Updated · Nature.com · Jun 24
Study of 27 Neanderthals Finds Higher Diversity, No Recent Human Gene Flow
3 articles · Updated · Nature.com · Jun 24
Summary
Genetic data from 27 Neanderthals at 10 sites in Belgium and France show late northwestern European groups were more closely connected and genetically diverse than isolated Altai populations.
A 22.4-fold genome from a 45,000-year-old Goyet individual and lower-coverage data from others found no long homozygous tracts typical of close-relative mating, pointing to larger or better-linked groups.
The researchers found no evidence of recent mixing with modern humans, even though these Neanderthals lived during a period of possible overlap from about 47,000 years ago.
The dataset also identified distinct maternal and paternal lineages, including some DNA from older Neanderthal branches, suggesting late Neanderthal population structure was more complex than previously known.
Measures of Genetic load did not worsen over time, arguing against progressive genetic deterioration as the main driver of Neanderthal extinction around 40,000 years ago.
If not bad genes, what truly drove Europe's last Neanderthals to extinction when modern humans arrived?
Why was genetic exchange between Neanderthals and modern humans a one-way street, only enriching our own ancestry?
Did evidence of Neanderthal cannibalism signal their final social collapse or a brutal but effective survival strategy?
Unveiling Neanderthal Complexity: Key Findings from the 2026 Western Europe Genetic Study
Overview
A major 2026 study published in Nature transformed our understanding of late Neanderthals in Western Europe by analyzing the genetics of 27 individuals from Belgium and France. The research revealed that these Neanderthals were more closely related to each other than to groups further east, showing strong regional genetic ties and suggesting regular interactions among Western European communities. The study also traced their separation from eastern relatives to about 54,000 years ago, highlighting a unique evolutionary path. These findings challenge old ideas of isolated Neanderthal groups and show they were more connected and diverse than previously thought.