Horse Colour Genetics. At the 2013 University of Kentucky UK Equine Showcase held Jan. Therefore a horse with the genotype Ee one black and one red allele has a black base color but can produce either black or red base offspring.
The Gray gene causes the progressive loss of pigment throughout the horses coat and will affect any color horse. An overo pattern that usually involves extensive white on the legs and face. The MC1R gene also known as extension determines whether a horse can produce black pigment.
Gene information displayed here.
Generally has a. The answer lies in coat color genetics. There are many different coat colors possible but all colors are produced by the action of only a few genes. Red pigment is produced by the recessive alleles of the extension locus designated E.