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Reply to "What makes caucasians white?"

Dear Art-girl,
My understanding of the difference in the pigmententation btw the various racial groups lies in the relative amounts of melanin in the melanocytes that lie in the skin. It has been said that everyone has the same number of melanocytes (melanin producing cells) but the ones in darker complexioned folks produce more of the dark pigment melanin...which in my opinion would confirm the commonality of man as one race and the varying amounts of melanin being reflective of the region from which a particular person or his/her roots may hail from.
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