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Red hair is associated with fair skin color because low concentrations of eumelanin throughout the body of those with red hair caused by a MC1R mutation can cause both. The lower melanin concentration in skin confers the advantage that a sufficient concentration of important Vitamin D can be produced under low light conditions. Additionally red hair doesn’t gray in color as much as other hair colors. As the human gets older, their red hair initially tends to turn blond and then white.
Red hair is associated with fair skin color because low concentrations of eumelanin throughout the body of those with red hair caused by a MC1R mutation can cause both. The lower melanin concentration in skin confers the advantage that a sufficient concentration of important Vitamin D can be produced under low light conditions. Additionally red hair doesn’t gray in color as much as other hair colors. As the human gets older, their red hair initially tends to turn blond and then white.
=== Genetics ===
=== Genetics ===
[[File: Redhead_close_up.jpg|thumb| A close-up view of red hair]]
[[File:Redhead close up.jpg|thumb| A close-up view of red hair]]
The alleles Arg151Cys, Arg160Trp, Asp294His, and Arg142His on MC1R are shown to be recessive genes for the red hair phenotype.
The alleles Arg151Cys, Arg160Trp, Asp294His, and Arg142His on MC1R are shown to be recessive genes for the red hair phenotype.
The gene ''HCL2'' (also called ''RHC'' or ''RHA'') on chromosome 4 may also be related to red hair. There are 8 genetic differences associated with red hair color.
The gene ''HCL2'' (also called ''RHC'' or ''RHA'') on chromosome 4 may also be related to red hair. There are 8 genetic differences associated with red hair color.