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Red hair, also known as ginger hair, is a human hair color found in 2–6% of people of Northern or Northwestern European ancestry and lesser frequency in other populations. It is most common in individuals homozygous for a recessive allele on chromosome 16 that produces an altered version of the MC1R protein.
Red hair ranges from light strawberry blond shades to titian, copper, and completely red. Red hair has the highest amounts of pheomelanin, around 67%, and usually low levels of eumelanin. At 1–2% of the west Eurasian population, it is the least common hair color in the world. It is most prominently found in the British Isles and in Udmurtia ...
Whereas Titian hair is a brownish shade of red hair, auburn hair is specifically defined as including the actual color red. Most definitions of Titian hair describe it as a brownish-orange color, [1] [2] but some describe it as being reddish. [3] This is in reference to red hair itself, not the color red.
Melanin is the protein that creates skin, eye and hair color. More melanin means darker eyes, hair or skin. The color of the melanin in the eyes is determined by three other genes, EYCL1, 2 and 3.
An agouti dog, also called wolf sable. In dogs, the agouti gene is associated with various coat colors and patterns. [10]The alleles at the A locus are related to the production of agouti-signaling protein (ASIP) and determine whether an animal expresses an agouti appearance and, by controlling the distribution of pigment in individual hairs, what type of agouti.
A 2014 study found that 30 percent of television commercials during primetime viewing hours in the United States prominently featured someone with red hair with, at one point, CBS showing a person with red hair once every 106 seconds, numbers not accurately reflective of the actual population of persons with the hair color. [7]
The Nioxin System 2 regimen reduces hair fall due to breakage, strengthens the hair and delivers a healthy shine to natural hair while refreshing the scalp, with options for color-treated hair ...
The two basic pigment colors of horse hairs are pheomelanin ("red") which produces a reddish brown color, and eumelanin, which produces black. These two hair pigment genes create two base colors: chestnut, which is fully red, and black, which is fully black. All other coat colors are created by additional genes that modify these two base colors.