Red hair occurs naturally on approximately 1–2% of the human population. It occurs more frequently (2–6%) in people of northern or western European ancestry, and less frequently in other populations. Red hair appears in people with two copies of a recessive gene on chromosome 16 which causes a mutation in the MC1R protein.
Red hair varies from a deep burgundy through burnt orange to bright copper. It is characterized by high levels of the reddish pigment pheomelanin and relatively low levels of the dark pigment eumelanin. The term redhead (originally redd hede) has been in use since at least 1510. It is associated with fair skin color, lighter eye colors (gray, blue, green, and hazel), freckles, and sensitivity to ultraviolet light.
Cultural reactions have varied from ridicule to admiration; many common stereotypes exist regarding redheads and they are often portrayed as fiery-tempered.
Read more about Red Hair: Biochemistry and Genetics, Red Hair of Pathological Origin
Famous quotes containing the words red and/or hair:
“The dancers crowded about him
And many a sweet thing said,
And a young man brought him red wine
And a young girl white bread.”
—William Butler Yeats (1865–1939)
“O Time and Change!—with hair as gray
As was my sire’s that winter day,
How strange it seems, with so much gone
Of life and love, to still live on!
Ah, brother! only I and thou
Are left of all that circle now,—
The dear home faces whereupon
That fitful firelight paled and shone.”
—John Greenleaf Whittier (1807–1892)