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Researchers from the Karolinska Institute and the Max Planck Institute for Evolutionary Anthropology have discovered that a Neanderthal gene variant continues to influence muscle mass in modern humans. The variant, affecting the growth hormone receptor, was inherited through interbreeding events that occurred approximately 47,000 years ago.

The findings demonstrate that specific genetic material inherited from ancient hominins still plays a biologically active role in contemporary human physiology. The study highlights the long-term impact of archaic human introgression on modern physical traits.