Brown coat color variations are caused by various mutations in the gene coding for tyrosinase-related protein-1 (TYRP1). The cinnamon (light brown) coat color is a consequence of inheriting two mutated copies of the TYRP1 gene.
TYRP1
Autosomal recessive (compound heterozygocity)
Current data does not indicate that this trait is more common among specific breeds.
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21 breeds
64 genetic health markers
50 genetic trait markers