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Chestnut is a hair coat color of horses consisting of a reddish-to-brown coat with a mane and tail the same or lighter in color than the coat. Chestnut is characterized by the absolute absence of true black hairs. It is one of the most common horse coat colors, seen in almost every breed of horse. Chestnut is a very common coat color but the ...
To be bay, a horse must have at least one E at extension and at least one A at agouti. [5] The extent to which a bay passes on its color varies. Two bay horses heterozygous for E (Ee x Ee) have a 25% statistical probability to produce a chestnut. Similarly, bay horses heterozygous for A (Aa x Aa) may produce a black foal.
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, [ 2 ] followed by black and chestnut.
A bay horse, showing black points. The word "points" is given to the mane, tail, lower legs, and ear rims with respect to horse coloration. The overall name given to a horse coat color depends on the color of both the points and the body. For example, bay horses have a reddish-brown body with black points. [3]
A horse's genes influence whether it will have white markings, though the exact genes involved could differ between breeds. [2] Chestnut horses generally have more extensive white markings than bay or black horses. [2] [3] Horses with the W20 allele typically have white face and leg markings. [4]
Cream coat colors are described by their relationship to the three "base" coat colors: chestnut, bay, and black. All horses obtain two copies of the SLC45A2 gene; one from the sire, and one from the dam. A horse may have the cream allele or the non-cream allele on each gene. Those with two non-cream alleles will not exhibit true cream traits.
A skewbald horse, chestnut with white patches. Skewbald is a colour pattern of horses. A skewbald horse has a coat made up of white patches on a non-black base coat, such as chestnut, bay, or any colour besides black coat. Skewbald horses which are bay and white (bay is a reddish-brown colour with black mane and tail) are sometimes called ...
Eumelanin predominates in the legs, mane and tail of bay horses. By contrast, horses which lack a functional agouti gene cannot produce such alternating bands, and thus have wholly black coats with no visible phaeomelanin. Chestnut horses lack the ability to manufacture eumelanin altogether, and so have wholly red coats devoid of true black ...