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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, [ 2 ] followed by black and chestnut. A change at the agouti locus is capable of turning bay to black, while a mutation at the extension locus can turn bay ...
Pearl gene. Pseudo-double dilute from action of pearl gene [1] The Pearl gene, also known as the " Barlink factor ", is a dilution gene at the same locus as the cream gene, which somewhat resembles the cream gene and the champagne gene but is unrelated to champagne. It is a somewhat rare dilution gene found in the American Quarter Horse ...
A “blue” dun, or grullo. A red dun. 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 ...
Eclipse, the horse proposed as the source of the X factor. The X factor theory proposes that a mutation within a gene located on the X chromosome of horses causes a larger-than-average heart. A larger-than average heart was documented in certain high-performance Thoroughbred, Quarter Horse, and Standardbred racehorses.
A cave painting of a wild horse, Lascaux. The dun coat and attendant primitive or "dun factor" markings reflect the wild type coat and are observed in all equine species. [3] Some cave paintings depict horses as being dun and with the primitive markings. The Przewalski's horse is dun-colored with primitive markings.
Below is a list of Thoroughbred racehorses with an undefeated race record. The list is not comprehensive for otherwise unnotable horses with five or fewer starts. Prince Tudor (GB) x Linda (TUR) by Cihangir (GB). Triple Crown winner. [ 15 ] Bend Or x Lily Agnes by Macaroni.
Thoroughbred breeding theories, or racehorse theories, are used by horse breeders in an attempt to arrange matings that produce progeny successful in horse racing. Bloodstock experts also rely on these theories when purchasing young horses or breeding stock. A basic understanding of these theories can also help the racing public understand a ...
Remember, this is done in memory of the honored dead, so that school shootings may hopefully go the way of the horse and buggy. Jason W. Park, a mental health advocate based in Los Angeles, earned ...