redhead


Also found in: Dictionary, Thesaurus, Financial, Encyclopedia, Wikipedia.

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 ?
Well done Catherine Parr, who also happened to be a redhead.
v=Ylt_p2zzONw) video , "The Chemistry of Redheads," the American Chemical Society explains redheads get their hair color and pale skin due to a genetic variant that causes their cells to produce reddish pheomelanin - a type of melanin.
To his delight he found himself surrounded by redheads, young and old, male and female, along with a few red furry animals including dogs and cats.
The non-profit Irish Redhead Convention partners with the Irish Cancer Society every year and has raised more than [euro]30,000 for the national charity to date, because redheads are one of the groups most susceptible to melanoma and other skin cancers.
I studied in Honolulu, which has a big international college population and even there I only saw a handful of redheads.
PERSONALITY: Angie Redhead has won a national award
The United States has the highest number of redheads in the world.
Redhead Equipment approached the ministry with a cost-sharing agreement that saw Redhead Equipment contribute $390,000, saving Saskatchewan taxpayers 50 per cent of the projects value.
Redhead Clothing began trading from Kylie's spare bedroom on April Fool's Day 2000, with a focus on 'mass market product at good prices' and clients included Farmers, Ezi-buy, Max Fashions, Storm, Pumpkin Patch and various others--all under their own house brand labels.
North Tyneside-based firm Sec-Tech UK was set up by Andy Redhead in 2006 after he became injured during an arrest.
Was it because of the reputed redhead fiery temper?