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Most wild equids are dun, as were many horses and asses before domestication of the horse. Some were non-dun with primitive markings, and non-dun 1 is one of the oldest coat color mutations, and has been found in remains from 42,700 years ago, along with dun. Non-dun 2, the version of the dun gene that most domestic horses have, is thought to ...
The dun gene is a dilution gene that affects both red and black pigments in the coat color of a horse. The dun gene lightens most of the body while leaving the mane, tail, legs, and primitive markings the shade of the undiluted base coat color. A dun horse always has a dark dorsal stripe down the middle of its back, usually has a darker face ...
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.
Grulla, or Blue Dun: A horse with a black base color and the dun gene. Coat is a solid "mouse-colored" gray or silver (can also be almost brownish-gray) with black or dark gray primitive markings. Red Dun: A chestnut base coat with dun factors. Coat is usually pale yellow or tan with chestnut (red) primitive markings.
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 are homozygous. Similarly, horses with a bay base coat and the cream gene will be buckskin or ...
Buckskin occurs as a result of the cream dilution gene acting on a bay horse. Therefore, a buckskin has the Extension , or "black base coat" (E) gene, the agouti gene (A) gene (see bay for more on the agouti gene), which restricts the black base coat to the points, and one copy of the cream gene (CCr), which lightens the red/brown color of the ...
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The dun gene and cream gene are present in the genetic material, but not white nor any variations of pinto. The Coldblood Trotter has a relatively small and square head with large nostrils. It is well suited for the cold conditions in Scandanivia, and it can develop large amounts of winter hair, having less need for blankets in winter.