Chocolate (dark brown) coat color

Trait overview

Brown coat color variations are caused by various mutations in the gene coding for tyrosinase-related protein-1 (TYRP1). The chocolate coat color is a consequence of inheriting two mutated copies of the TYRP1 gene.

Gene name(s)

TYRP1

Inheritance

Autosomal recessive

More common in the following breeds

Current data does not indicate that this trait is more common among specific breeds.

Citations

https://pubmed.ncbi.nlm.nih.gov/16104383/