Horse coat colour genetics is important for horse breeders. Knowledge of potential coat colour genes in a horse would assist the breeders in the selection of offspring with preferred coat color phenotype.

Several genetically characterized genes determine the coat colour of a horse; Agouti-gene, Extension-gene, Cream dilution-gene, Tobiano-gene, White-gene, Greying hair-gene, Sabino-gene, and Silver-gene. MBG can help to determine the genetics of coat colour in a horse by combination of different DNA tests.