Dilution gene

Dilution gene

Dilution gene is a popular term for any one of a number of genes that act to create a lighter coat color in living creatures. There are many examples of such genes:

Contents

General

Diluted coat colors have melanocytes, but vary from darker colors due to the concentration or type of these pigment-producing cells, not their absence. Pigment dilution, sometimes referred to as hypomelanism, has been called leucism, albinism (perfect, impartial, or dilute), ghosting, paling, and isabellinism.[1]

  • Albinism describes a condition where there is no color pigment
  • Leucism describes a condition that creates loss of pigment cells

Cats

Horses

  • Equine coat color genetics discusses color genes in horses, including a brief description of dilution genes
  • Equine coat color describes various colors in horses
  • Cream gene, describes the process for horses by which the cremello, perlino, smoky cream double-dilute colors are created as well as the buckskin, palomino and smoky black single dilute colors.
  • Dun gene describes another common dilution gene in horses
  • Champagne gene, describes a different and rarer dilution gene in horses that also creates cream coloring, pale skin with mottling and light-colored eyes.
  • Pearl gene, also called the "Barlink factor," is a recessive gene. One copy of the allele has no effect on the coat color of black, bay or chestnut horses. Two copies on a chestnut horse produce a pale, uniform apricot color of body hair, mane and tail as well as pale skin. It also interacts with Cream dilution to produce "pseudo-double" Cream dilutes with pale skin and blue or green eyes.
  • Silver dapple gene, describes a dilution gene that works in a unique manner, lighting the mane and tail of a horse to a greater degree than the body color (opposite of most dilution genes, which act more strongly on the body color)
  • White (horse) describes several unique genetic processes that create truly white, not diluted, color in horses.
  • Gray (horse) explains the process of the gray gene, which lightens the coat over time, but is not a dilution gene.

References

  1. ^ Davis, Jeff N. (September/October 2007). "Color Abnormalities in Birds". Birding (American Birding Association) 39 (5). 

See also

v · d · eEquine coat colors
Basic coat colors
Bay · Black · Chestnut (also known as Sorrel) · Gray
 Mustangs.jpg
Dilution modifiers
Dilution gene · Dun · Grullo (variation of Dun) · Silver dapple · Champagne · Pearl dilution · Cream gene (influences)  · Buckskin · Palomino · Cremello · Perlino · Smoky black · Smoky cream  · Isabelline
Other color modifiers
Sooty · Liver  · Seal brown  · White (includes genetically distinct): · Dominant white · Sabino-white  · Lethal white syndrome
Markings and patterns
Horse markings · Primitive markings · Bend-Or spots · Cropout  · Point coloration  · Pangaré  · Brindle · Leopard complex (see also Appaloosa and Knabstrupper breeds, Varnish roan) · Roan · Rabicano · Pinto horse: (Patterns include )  · Overo (including genetically distinct Splashed white, Frame, and Sabino)  · Tobiano · Tovero · (Color variations): Piebald · Skewbald · Tricoloured
Genetics and breeding

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Look at other dictionaries:

  • dilution gene — dilution gene. См. ген ослабитель. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Dilution — may refer to: Reducing the concentration of a chemical Serial dilution, a common way of going about this reduction of concentration Homeopathic dilution Dilution (equation), an equation to calculate the rate a gas dilutes Trademark dilution, a… …   Wikipedia

  • Gène silver — Le gène silver est un gène dominant du cheval, assez rare, qui agit sur la couleur noire et lui donne une apparence argentée, ajoutant aussi de petites pommelures plus claires sur le pelage. L article « Crins lavés » est un complément… …   Wikipédia en Français

  • Gène champagne — Champagne classique, robe créée par l action d un gène de dilution sur une robe noire. Le gène champagne est un allèle dominant simple, responsable d un certain nombre de couleurs rares de la robe du cheval. Les traits les plus distinctifs de… …   Wikipédia en Français

  • Gène dun — Alezan sauvage Le gène dun est un gène de dilution responsable des couleurs de robe dites « sauvages » chez le cheval. Son action donne des marques dites primitives (zébrures sur les jambes et raie de mulet) en plus de décolorer la robe …   Wikipédia en Français

  • Gène sooty — Poney Connemara isabelle sooty, ou louvet. Le gène sooty est un gène de couleur du cheval, qui donne un mélange de poils noirs à l extrémité du pelage sur une autre robe. En France, avant sa reconnaissance génétique, les chevaux isabelles… …   Wikipédia en Français

  • Cream gene — Perlino redirects here. For the Polish village, see Perlino, Poland. The action of the cream gene on a chestnut base coat produces palomino …   Wikipedia

  • Champagne gene — Champagne coloration is created by a dilution gene. The champagne gene is a simple dominant allele responsible for a number of rare horse coat colors. The most distinctive traits of horses with the champagne gene are the hazel eyes and pinkish,… …   Wikipedia

  • Dun gene — A bay dun, also called a classic or zebra dun A Blue dun, or Grullo …   Wikipedia

  • Silver dapple gene — The silver dapple ( Z ) gene is a dilution gene that affects the black base coat color. It will typically dilute a black mane and tail to flaxen, and a black body to a shade of brown or chocolate. [http://www.vgl.ucdavis.edu/services/coatcolorhors… …   Wikipedia

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