I'm pretty sure the mutation in the single gene which determines how much melamine is deposited in skin, eyes and hair is due to vitamin D levels. Vitamin D is

I'm pretty sure the mutation in the single gene which determines how much melamine is deposited in skin, eyes and hair is due to vitamin D levels. Vitamin D is produced in the skin when exposed to UV light. People from the north don't get enough of it, even with today's modern diet and vitamin D fortified foods. The Inuit get more D from their fatty marine diet. And blonds are not universality preferred. Try it, if you're darkish go to the Scandinavian nations and see what kind of attention you get from the opposite sex. Rarity is preferred, blonds just happen to be rare in most of the world except Northern Europe.