Why do Scots have red hair?

Scots often have red hair due to a high prevalence of the MC1R gene variant, which is responsible for red hair and fair skin. This genetic trait is more common in populations with Celtic ancestry, particularly in Scotland and Ireland. The unique combination of genetics and the historical isolation of these populations contributed to the distinctive presence of redheads in Scotland. Additionally, environmental factors and natural selection may have played a role in the survival of these traits in the northern climate.