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The dun gene is one of the dilution genes that affects both red and black pigments in a horse's coat color. Unlike the silver dapple gene (which works only on black-based coats) or the creme gene (which works on red-based coats), it has the ability to affect the appearance of all black, bay, or chestnut (red) based horses to some degree. The gene affects coat color by turning black on certain areas to chocolate or a slate grey colour, and red on certain areas to a golden or beige colour. Image File history File linksMetadata Download high-resolution version (1200x900, 108 KB) [edit] Licensing File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Dun gene Metadata This file contains additional information, probably added from the digital camera or scanner...
Image File history File linksMetadata Download high-resolution version (1200x900, 108 KB) [edit] Licensing File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Dun gene Metadata This file contains additional information, probably added from the digital camera or scanner...
Binomial name Equus caballus Linnaeus, 1758 The horse (Equus caballus, sometimes seen as a subspecies of the Wild Horse, Equus ferus caballus) is a large odd-toed ungulate mammal, one of ten modern species of the genus Equus. ...
This article needs to be cleaned up to conform to a higher standard of quality. ...
// The Colors it Produces The creme gene is a gene expressed in horses, producing many common, and not so common, colors. ...
The dun allele is a simple dominant allele, so that the phenotype of a horse with either one copy or two copies of the dun allele is dun. A horse with two non-dun alleles is just that, not dun.
See Equine coat color genetics to compare the genes. There are currently two theories of equine coat color genetics: Dr. Ann Bowlings and Dr. Phillip Sponenbergs. ...
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Dun vs buckskin
Since dun can closely resemble buckskin when it is on a bay-based (black base + Agouti gene) horse, it is in some cultures confused with buckskin. The difference between these two genes is that the dun gene also causes "primitive" markings, and a different shade of body colour. These primitive markings are usually a shade or two darker than the body color. Primitive markings include: Buckskin is a color of horses; it also refers to other things that are the color of a buckskin horse, such as the color of some breeds of dogs. ...
Agouti refers to a number of species of rodents, as well as a number of genes affecting coat coloration in several different animals. ...
- Shoulder blade stripes
- Dorsal stripe
- Zebra stripes on legs
- Cob webbing
However, dorsal striping does not guarantee that the horse carries the dun gene. The counter-shading gene can also produce dorsal striping in breeds such as the Arabian and the Thoroughbred, where the "dun" dilution gene does not exist in the gene pool.
Note: Unlike the dun dilution gene, the creme gene does exist in Thoroughbreds. [1], [2] // The Colors it Produces The creme gene is a gene expressed in horses, producing many common, and not so common, colors. ...
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Shades of dun The dun gene seems to have more concentration in the body than the mane, tail, legs and head, and so lightens the body coat more. This would explain why points on a dun are a shade darker than the coat, or in the case of a zebra dun, the mane, tail, and legs are not diluted much at all. The zebra duns have the "buckskin" look to them: tan body color with black points, plus the primitive markings. Their coat, however, is usually more tan than the yellow of most buckskins. Red dun colored horses do not have the black points, and they are usually grouped together and called Red Duns. Grullo (GREW-yo, or Grulla, GREW-ya for females), mouse duns or blue duns have a smoky, bluish, or mouse-brown color and can vary from light to dark. They consistently have black points and they often have a dark or black head, which is an identifying characteristic of the this group. The primitive markings are usually all black. Image File history File linksMetadata Dun_(color). ...
Image File history File linksMetadata Dun_(color). ...
Grullo is a color of horses, characterized by smoky or mouse colored hairs on the body, often with shoulder and dorsal stripes and black barring on the lower legs. ...
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Breeding and the dun gene - Red base + Dun= Red Dun (it is because they are red-based that they don't have black points of the Zebra Dun). Less common than Zebra/bay Duns, more than Grullos
- Black base + Dun= Blue dun, mouse dun or Grullo/Grulla.
- Bay (black base = Agouti gene)= Zebra Dun/ Bay Dun.
The three different dun varieties usually occurr in proportion to the occurrence of the corresponding base colours in each particular breed. Agouti refers to a number of species of rodents, as well as a number of genes affecting coat coloration in several different animals. ...
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See also [edit] // The Colors it Produces The creme gene is a gene expressed in horses, producing many common, and not so common, colors. ...
Dun is a yellow-brown color, sometimes seen in the hair coats of horses, characterized by a body color ranging from sandy yellow to reddish-brown. ...
Buckskin is a color of horses; it also refers to other things that are the color of a buckskin horse, such as the color of some breeds of dogs. ...
Bay is a color of the hair coats of horses, characterized by a body color of dark red (known as blood bay) to deep brown, with black points (mane, tail, lower legs, and sometimes the muzzle and tip of the ears). ...
There are currently two theories of equine coat color genetics: Dr. Ann Bowlings and Dr. Phillip Sponenbergs. ...
The genetics of cat coat length and coloration is a complex subject, and many different genes are involved. ...
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