What about
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and their
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from it? ( not counting the people who would have the related gene due to mix ethnicity).
Melanin protects the skin against ultraviolet light. But by blocking the sun’s rays, melanin affects the
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So the darker the skin, the less vitamin D you produce. In the scientific literature, the difference is striking.
It was clear you had paid no attention about the genetic variation the light skinned had developed to be able to survive in the climatic condition they were in and without which they couldn't have survived long in that region, despite quoting from that article.
Everyone can live anywhere today because we have tons of medical supplements and resources to make up for what we lack naturally. If original ancestors were suitable for all the climates they might not have evolved this way. People in different regions developed in a way to suit their climate.