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12 coat locus topics matching:
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| x name | x code | x dominant allele | x recessive allele | x effect | x article |
| x Base coat locus | E | Black | Chestnut | E_ |
All horse coat colors are either variants of the dominant Black (EE, Ee) or the recessive Chestnut (ee) base color. The dominant Black pigment is caused by production of the protein Eumelanin (yoo-MEL-a-nin). The recessive Chestnut color...
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| ee | |||||
| x Agouti locus | A | Bay | Solid Coat Allele | A_ |
Acts on Base Coat Color (E) to restrict the black pigment eumelanin to "points". This allows red coat color to show on horses with a Black Base Coat. There is no effect on horses with a Chestnut Base Coat (ee), since they have no black...
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| aa | |||||
| x White locus | W | White Coat | Color Coat Allele | WW |
True "white" horses, which are those that carry one copy of the White or "W" gene, are rare. Most horses that are commonly referred to as "white" are actually gray horses whose hair coats are completely white. The dominant allele is homogygous lethal...
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| Ww | |||||
| ww | |||||
| x Gray locus | G | Gray Coat | Non-Graying Coat Allele | G_ |
Grey slowly removes the pigment from the original color of the horse as it ages. Grey has the unique ability to mask all other coloration: in other words, all horses that carry the Greying gene...
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| gg | |||||
| x Cream locus | C | Cream | Non-Cream | CCr |
The cream gene is responsible for a number of horse coat colors. Horses that have the cream gene in addition to a base coat color that is chestnut will become palomino if they are heterozygous, having one copy of the cream gene, or cremello, if they...
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| CC | |||||
| CrCr | |||||
| x Dun locus | D | Dun | Non-Dun | dd |
The dun gene is a dilution gene that affects both red and black pigments in the coat color of a horse. The dun gene has the ability to affect the appearance of all black, bay, or chestnut ("red")-based horses to some degree by lightening the base...
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| D_ | |||||
| x Roan locus | Rn | Roaning | Non-Roaning | Rn_ |
Roan is a coat color defined as an even mixture of white and pigmented hairs that does not "gray out" or fade as the animal ages.
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| rnrn | |||||
| x Flaxen locus | F | Non-Flaxen | Flaxen | ff |
A proposed locus that causes blond ("flaxen") manes, tails, and points on Chestnut (ee) horses. This locus has not been located or verified, but has been inferred by the true breeding of chestnut breeds with flaxen points, such as Halfingers.
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| x Silver dapple gene | Z | Z_ |
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. It is responsible for a group of coat colors in horses...
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| zz | |||||
| x Tobiano locus | TO | TO | to | TO_ | |
| toto | |||||
| x Sabiano locus | Sb | Sb_ | |||
| x Champagne locus | Ch | Ch | ch | Ch_ |
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, freckled skin, which are bright blue and bright pink at...
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| chch | |||||
