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P903

The Tobiano white-spotting pattern is a depigmentation phenotype in horses.

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Specifications

Breeds

,

Gene

Organ

specimen

Hair, Blood EDTA, Blood Heparin, Semen, Tissue

Mode of Inheritance

Chromosome

Year Published

General information

The Tobiano white-spotting pattern is a depigmentation phenotype in horses. The phenotype is an autosomal dominant trait. The white-spotting pattern is expressed by the Tobiano allele (To). A SNP associated with To has been identified at the KIT gene.

Clinical features

The Tobiano white-spotting pattern is characterized by general and distinct oval or round patches of depigmented skin and coat. The depigmentation extend down over the neck and chest, which can be seen as a shield. The extent of the depigmentation can range from approximately 20% to 80% of the body surfaces. The spotting pattern is present at birth and stable throughout life.

Additional information

References

Pubmed ID: 18410476

Omia ID: 209

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