Dominant white
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Dominant white is a group of genetically related coat color alleles on the KIT gene of the horse, best known for producing an all-white coat, but also able to produce various forms of white spotting,
This Thoroughbred stallion (W2/+) has one form of dominant white. His skin, hooves, and coat lack pigment cells, giving him a pink-skinned white coat.
This dominant white Franches-Montagnes colt (W1/+) lost almost all his residual pigment by the time he was 3 years old (below)
The same foal as an adult horse. Some white spotted horses lose pigment with age, even though they do not possess the gray gene. The underlying skin remains dark.
The Camarillo White Horse breed has a dominant white coat attributed to the W4 mutation.
Equine coat color genetics
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Equine coat color genetics determine a horse's coat color. Many colors are possible, but all variations are produced by changes in only a few genes. Bay is the most common color of horse, followed by
Before domestication, horses are thought to have had these coat colors.
The flat, earthy tone of the coat and vivid dorsal stripe are indicative of the D allele. Primitive markings are seldom visible on horses without the dominant, wildtype dun allele (D).
Kamsin 0028
Friesian Sporthorsestallion