Based on available information, red hair is considered the rarest natural hair color in the world.
Approximately 1-2% of the global population has red hair.
It's most commonly found in people of Northern and Western European ancestry, particularly in Scotland and Ireland.
Red hair is caused by a mutation in the <a href="https://www.wikiwhat.page/kavramlar/MC1R%20gene">MC1R gene</a>. For a child to have red hair, both parents must carry this gene, even if they don't have red hair themselves.
People with red hair often have fair skin, freckles, and are more sensitive to <a href="https://www.wikiwhat.page/kavramlar/ultraviolet%20(UV)%20radiation">ultraviolet (UV) radiation</a>.
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