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Like bay, the seal brown color lacks the non-agouti mutation that would create a fully black horse. [1] The genetics behind seal brown are not known, but some think it is caused by an allele of agouti called A t. [2] A DNA test said to detect the seal brown (A t) allele was developed, but the test was never subjected to peer review and due to ...
The other is a specific allele of Agouti linked to a certain type of dark bay, called seal brown. The seal brown horse has dark brown body and lighter areas around the eyes, the muzzle, and flanks. A DNA test said to detect the seal brown (A t) allele was developed, but the test was never subjected to peer review and due to unreliable results ...
Dark Bay: a dark brown or dark reddish-brown coat with black points, difficult to distinguish from seal brown. Sometimes also called "black bay" or "mahogany bay." Blood Bay/Red Bay: a bright red chestnut coat with black points; Brown: The word "brown" is used by some breed registries to describe dark bays. Informally, "brown" is applied to ...
EE, Ee, or Ee a: Horse forms black pigment in skin and hair, and may be black, seal brown, or bay. ee, ee a, or e a e a: Horse is chestnut; it has black pigment in skin, but red pigment in hair. ASIP (Agouti) A a: Agouti: Restricts eumelanin, or black pigment, to "points," allowing red coat color to show on body. No visible effect on red horses ...
Amber dun refers to an otherwise-bay coat affected by both the champagne gene and dun gene. [21] The mane and tail and primitive markings are warm chocolate brown with a buff tan-colored body. The legs may, or may not, be dark as well. Sable dun refers to an otherwise-seal brown coat affected by both the champagne gene and dun gene. [21]
The cream gene acting on a "blood bay" coat, the reddest shade, are pale gold with black points. They are sometimes called buttermilk buckskins. The cream gene acting on the darkest bays (sometimes mistaken for seal browns) may dilute to a sooty buckskin. True seal brown buckskins can be very difficult to identify owing to their almost all ...
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At one time, the seal brown coat color was hypothesized to occur from the action of pangaré on a black coat. However, this has been disproven; seal brown horses are a variation of the bay color. [4] [5] In donkeys, no light points (loss of pangare) is caused by a recessive missense mutation at agouti.