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The Dominant White coat colour pattern in horses can be caused by any in a wide array of related mutations.
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Caractéristiques
| Breeds | |
|---|---|
| Gene | |
| Organ | |
| specimen | Hair, Blood EDTA, Blood Heparin, Semen, Tissue |
| Mode of Inheritance | |
| Chromosome | |
| Also known as | |
| Year Published |
Informations générales
The Dominant White coat colour pattern in horses can be caused by any in a wide array of related mutations. The resulting pattern can vary anywhere between white markings on the face and legs, up to a completely white coat. Depending on both breed and pattern, variants of the Dominant White phenotype may be referred to as Splashed White, White Spotting, Tobiano or Sabino, among others.
The variant analysed in this test, known as Tobiano, is caused by a dominant mutation to the gene KIT. The variant is present in approximately 86% of Lewitzer horses with tobiano patterning, and has also been found in the Irish Cob.
Caractéristiques cliniques
Le motif de taches blanches Tobiano se caractérise par des taches ovales ou rondes générales et distinctes de peau et de pelage dépigmentés. La dépigmentation s’étend sur le cou et la poitrine, ce qui peut être vu comme un bouclier. L’étendue de la dépigmentation peut varier d’environ 20% à 80% des surfaces du corps. Le motif de repérage est présent à la naissance et stable tout au long de la vie.
Additional Information
Coat colour is an intricate trait that involves a combination of multiple different genes. Testing for a range of different loci will give the most complete prediction of a horse's coat colour genetics.
Dominant White can be caused by a wide range of mutations. A white-patterned horse that tests as unaffected for a particular mutation will almost certainly be affected by a different one.
Références
Pubmed ID: 18410476
Omia ID: 209