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 hair, red and/or hair:
“With the old kindness, the old distinguished grace,
She lies, her lovely piteous head amid dull red hair
Propped upon pillows, rouge on the pallor of her face.
She would not have us sad because she is lying there,
And when she meets our gaze her eyes are laughter-lit,
Her speech a wicked tale that we may vie with her....”
—William Butler Yeats (1865–1939)
“The Red Cross in its nature, it aims and purposes, and consequently, its methods, is unlike any other organization in the country. It is an organization of physical action, of instantaneous action, at the spur of the moment; it cannot await the ordinary deliberation of organized bodies if it would be of use to suffering humanity, ... [ellipsis in original] it has by its nature a field of its own.”
—Clara Barton (1821–1912)
“The winds awaken, the leaves whirl round,
Our cheeks are pale, our hair is unbound,
Our breasts are heaving, our eyes are agleam,
Our arms are waving, our lips are apart....”
—William Butler Yeats (1865–1939)