European blue eye gene emerged 8,000-12,000 years ago in West Eurasia. European blue eye variant is tied to a regulatory mutation in the HERC2 gene (RS12913832) This mutation reduces melanin production in the iris, allowing light scattering perceived as blue The variant emerged around 8,000 to 12,000 years ago in West Eurasia (Eastern Europe or Pontic Caspian region)

European blue eyes trace to a single regulatory mutation in the HERC2 gene (RS12913832) that emerged earlier than 10,000 years ago, likely in West Eurasia. This variant spread through founder effects, farming expansions, and steppe migrations. Nearly all blue-eyed Europeans carry this one ancestral mutation. 👁️

Key Facts

  • European blue eye variant is tied to a regulatory mutation in the HERC2 gene (RS12913832)
  • This mutation reduces melanin production in the iris, allowing light scattering perceived as blue
  • The variant emerged around 8,000 to 12,000 years ago in West Eurasia (Eastern Europe or Pontic Caspian region)
  • Spread was due to founder effect, Neolithic farmer expansions, steppe groups, and sexual selection
  • Nearly all blue-eyed Europeans today trace back to this single ancestral mutation
  • The gene also spread to Near East, Caucasus, Central Asia, and parts of South Asia through migration