Synonymous variants and 3) the relatively short time over which this colorĭiversity developed. Such selection is consistent with 1) the manyĪlleles for European hair and eye color 2) the high ratio of nonsynonymous to Will spread through the population until it loses its novelty value and becomesĪs frequent as the original one. Visible feature becomes differently colored through mutation, the new color It favors eye-catching colorsĪnd, if strong enough, can produce a color polymorphism, i.e., whenever a Seems to have been selected for its visual properties, particularly brightnessĪnd novelty. This color scheme is more developed in women than in men and Not only brown but also blue, gray, hazel, or green. Their hairĬan be not only black but also brown, flaxen, golden, or red, and their eyes Particularly northern and eastern Europeans, are unusually colored.
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