Red hair can appear as light red, or "strawberry blonde" ("blond" for males), as "carrot top" orange, as ginger, copper, or as medium to dark "auburn" red, all attributable to relatively high levels of the reddish pigment pheomelanin.
Light eyes (gray, blue, and green), light skin, and freckles are associated with the recessive red-hair gene (melanocortin 1 receptor, or MC1R, found on the 16th of the 23 human chromosome pairs), which has existed for only about 50,000 years according to Jonathan Rees of the University of Edinburgh in Scotland, who identified the red-hair gene in 1995.
Light eyes (gray, blue, and green), light skin, and freckles are associated with the recessive red-hair gene (melanocortin 1 receptor, or MC1R, found on the 16th of the 23 human chromosome pairs), which has existed for only about 50,000 years according to Jonathan Rees of the University of Edinburgh in Scotland, who identified the red-hair gene in 1995.
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