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The dun gene, when on a "bay dun" horse, can closely resemble buckskin, in that both colors feature a light-colored coat with a dark mane and tail. In particular, buckskins with non-dun 1 primitive markings can easily be confused with dun. [11]: 32 Genetically, a bay dun is a bay horse with
Some bay horses have a faint dorsal stripe, which may be caused by the non-dun 1 allele. The oldest known horse coat color is bay dun, a tan color with a black mane, tail, dorsal stripe, and lower legs. The legs may sometimes have zebra-like black stripes; these, along with the dorsal stripe seen on all dun horses, are called primitive markings ...
Visually, the horse may be bay dun, grullo, red dun, palomino dun, amber dun, gray, and so on. Such a horse will always pass on the D allele and will therefore always have dun offspring. D/d (+/d, D + /D d) wildtype, heterozygous. Visually indistinguishable from the homozygous D horse. d/d (D d /D d) non-dun, homozygous recessive. The entire ...
Steel Grey/Iron Grey: A grey horse with intermingled black and white hairs. This color occurs in a horse born black, or in some cases, dark bay, and slowly lightens as the horse ages. Rose Grey: A grey horse with a reddish or pinkish tinge to its coat. This color occurs in a horse born bay or chestnut and slowly lightens as the horse ages.
This horse's dorsal stripe is most likely caused by non-dun 1. Less distinct primitive markings can also occur on non-dun horses, even in breeds which are not known to have any dun individuals. The most common primitive marking found is a dorsal stripe. [1] Most non-dun horses do not have darker primitive markings, but some do.
Buckskin is also created by the action of a single cream gene, but on a bay coat. Dun horses have a tan body with a darker mane and tail plus primitive markings such as a dorsal stripe down the spine and horizontal striping on the upper back of the forearm. The pearl gene in a homozygous state creates a somewhat apricot-colored coat with pale ...
Dun: A horse coat color that features primitive markings: a slightly darker hair shade from the base coat located in a dorsal stripe along the horse's backbone, horizontal striping on the upper legs and sometimes transverse striping across the shoulders. These markings identify a horse as a dun as opposed to a buckskin or a bay.
Bay dun horses also exhibit primitive markings, especially a dorsal stripe, though amber duns will also possess these marks. The eyes and skin remain the best identifying feature. Buckskins, like palominos, will a parent that is palomino, buckskin, smoky black, or blue-eyed cream. Bay duns will have a parent that is bay dun, red dun, or grullo.