9 Amazing Facts About Your Eyes - Page 5 of 9 - 9facts

9 Amazing Facts About Your Eyes

#5. All blue eyed people can be traced back to one person who lived near the Black Sea almost 10,000 years ago

All blue eyed people can be traced back to one person who lived near the Black Sea almost 10,000 years ago

The genetic switch is located in the gene adjacent to OCA2 and rather than completely turning off the gene, the switch limits its action, which reduces the production of melanin in the iris. In effect, the turned-down switch diluted brown eyes to blue. If the OCA2 gene had been completely shut down, our hair, eyes and skin would be melanin-less, a condition known as albinism. Source: en.wikipedia.org

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