Inbreeding didn’t doom the Neanderthals, study suggests

AI Insight

A new analysis of over two dozen Neanderthal genomes reveals that these ancient humans maintained genetic health and did not suffer from damaging levels of inbreeding immediately before their extinction approximately 40,000 years ago. The study challenges the long-standing hypothesis that inbreeding depression contributed to Neanderthal extinction. The genomic data shows that Neanderthal populations, despite being small, avoided the severe genetic consequences typically associated with inbreeding.

Why it matters

This finding forces scientists to reconsider explanations for Neanderthal extinction and suggests other factors, such as climate change, competition with modern humans, or demographic challenges, were more significant. Understanding why genetically healthy populations can still go extinct has implications for modern conservation biology and the management of endangered species with small population sizes.