redhead

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redhead

adjective Referring to red (ginger) hair or a person with same.

noun A person with orange-red hair colour, or the hair itself, which is seen in 1–2% of the entire human population, 2–6% in Europeans, and 13% of Scots.

Genetics
Red hair is an autosomal recessive phenotype inherited when both patents have specific codon changes on MC1R, the melanocortin-1 receptor gene—aka, melanocyte-stimulating hormone receptor (MSHR). A ginger child can be born to non-ginger parents. The increase of red hair in northern Europe relative to Africa, where there is natural selection against light-coloured skin, has been attributed to a lack of negative selection, to genetic drift and possibly to sexual selection. Data suggest that gingers differ from non-gingers in sensitivity to pain and anaesthetics, which has been attributed to molecular cross talk between melanin-stimulating hormone (MSH) and pro-opiomelanocortin (POMC) and their respective receptors.
References in periodicals archive ?
It's good to be different, a trait Big Red shares with its fans and Red Heads all over the world.
Exciting red heads and fun-living blondes are considered the most mischievous by Irish men, (34 per cent and 33 per cent respectively).
They are also more likely to keep their cool under pressure at work than their fellow brunettes and red heads.
Alison Tay is deputy star style editor at Now magazine and can't get enough of red heads - literally.
Like the cartoon character, all of the males have red heads.
From April to June, hundreds of turkey vultures--with red heads and wingspans of up to 6 feet--return to nest here and ride the thermals above the treeless wind-sculpted badlands of eastern Montana.
And a massive 70 per cent of the men would describe red heads as fiery.
It was not that the birds with fake red heads were suddenly more aggressive," Nature magazine quoted Pryke as saying.
London, Feb 6 (ANI): Girls Aloud star Nicola Roberts has pipped stars like Lindsay Lohan, supermodel Lily Cole and Florence Welch to be voted The Sexiest Red Head of All Time.