Blue eyes are the result of a genetic mutation in the OCA2 gene, which affects melanin production in the iris. This mutation doesn’t turn off the gene entirely but limits melanin, creating blue instead of brown eyes. In 2008, researchers at the University of Copenhagen found that all blue-eyed individuals share this exact mutation, suggesting it came from a single common ancestor. This person likely lived in Europe—possibly near the Black Sea—about 6,000 to 10,000 years ago. Before this mutation
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Blue eyes are the result of a genetic mutation in the OCA2 gene, whic…
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The appearance of blue eyes traces back to a single, spontaneous mutation in the OCA2 gene that occurred in an individual near the Black Sea between 6,000 and 10,000 years ago. Before this, brown was the predominant eye color. The mutation doesn't create blue pigment; rather, it acts as a 'switch' that reduces melanin production in the iris. This causes light to scatter in a way that makes the eyes appear blue, a phenomenon known as the Tyndall effect. This genetic trait emerged during the Neoli
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