Polygenic evolution towards a morning chronotype in modern humans
Shoko Hamamoto, Yuka Moriya, Naoko T. Fujito, Shigekazu Higuchi, Kosuke M. Teshima, Toshiyuki Hayakawa
This study identifies polygenic trends in morning chronotype evolution in modern humans above 20 degrees north, showing increased morningness compared to Neanderthals.
bioRxiv · Nov 2, 2026 · PreprintEvolutionary Biology