Ancient DNA Reveals How European Skin, Eye, And Hair Color Evolved Over The Past 45,000 Years
Geographical distribution across Eurasia of selected ancient samples. The colored dots represent different time transect: black-Paleolithic, light blue-Iron Age, and intermediate shades-transitional periods (from Mesolithic to Bronze Age). The number of samples at each site is indicated inside each dot. The two test samples, the Paleolithic Ust’-Ishim and the Mesolithic SF12, are highlighted with labels. Credit: bioRxiv (2025). DOI: 10.1101/2025.01.29.635495
Light eyes, hair, and skin are believed to have evolved multiple times as Homo sapiens moved out of Africa. In areas with lower UV radiation, lighter pigmentation alleles became more prevalent due to their adaptive advantages and influences, such as migration and genetic drift. However, the exact speed and process of this spread remain uncertain. Inferring phenotypes from ancient DNA is complex because these traits are polygenic and often involve low sequence depth.
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