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Skin Color Skin color is a polygenic trait. To simulate this inheritance will require 6 coins. Assume you have 6 genes for skin color. You will contribute 3 of those to your sperm or egg depending on your gender. A person with "black" phenotype skin will have six dominant color genes (6 heads), so they will not flip any coins. They are only going to contribute 3 heads (HHH) to their gametes. Likewise, a "pale face" will not flip any coins, because they are going to contribute 3 tails (ttt) to their gametes. A"very dark brown" or "tan" individual would only flip 1 coin. A "dark brown" or "light brown" would flip 2 coins. A "brown" phenotype would flip 3 coins.
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