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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 ...
A dilution gene that produces what looks like point coloration, but from a completely different genetic mechanism is the dominant Dun gene, which dilutes the color of the body coat but not the points, including primitive markings—a dorsal stripe down the back and, less often, horizontal striping on the upper legs. On a bay base coat the dun ...
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 be much more recent, possibly from after domestication. [3]
Non-dun 1 removes the diluting effect of dun, but keeps the primitive markings, while non-dun 2 removes both the diluting effect and the primitive markings. [13] The non-dun1 allele is over 40,000 years old, while non-dun2 is relatively recent, and is thought to have first appeared within the past several thousand years. [4]
Some horses with a particular type of dun hair coat known as a "blue dun", grullo, or "mouse" dun appear to be a solid gray. However, this color is caused by the dun gene acting on a black base coat, and horses who are dun have all hairs the same color; there is no intermingling of white and dark hairs. Also, dun horses do not get lighter as ...
They found that genetic risk of having the condition correlates to the proportion of ancestry from a group of ancient pastoralists who introduced domesticated animals to Europe around 5,000 years ago.
Overall, 11 percent of the women in the study said worrying about cancer made a big impact on their life, and 15 percent said they were often or almost worried. New breast cancer gene tests don't ...
DNA tests and patience are effective in determining which is the case. Some of the terms used to describe these combinations include: Dunalino, yellow dun or palomino dun: a chestnut-based coat with one cream allele and at least one dun allele. The points are reddish, but the body coat is a paler, flatter shade of gold and primitive markings ...