Genetics Of Red Hair

Red hair is a recessive genetic trait caused by a series of mutations in the melanocortin 1 receptor mc1r a gene located on chromosome 16. Researchers discover genetic link to red hair it was originally thought that red hair was caused by a single gene called mc1r often referred to as the ginger gene almost everyone with red hair has two specific versions of the mc1r gene for ginger hair.

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The genetics of red hair appear to be associated with the melanocortin 1 receptor mc1r which is found on chromosome 16.

Genetics of red hair. As a recessive trait it must be inherited from both parents to cause the hair to become red. 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. Red hair is the result of a genetic variant that causes the body s skin cells and hair cells to produce more of one particular type of melanin and less of another.

Eighty percent of redheads have an mc1r gene variant. Famous redheads include queen elizabeth i and malcolm x. Hair color is primarily genetic and red hair is caused by mutations in the mc1r gene.

Contrary to internet rumors redheads are not going extinct. The gene for red hair also causes an increased sensitivity to sunlight and a reduced sensitivity to anesthesia.

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