 Similarly, two apparently solid-colored horses with separate factors for white markings may produce a foal expressing both, with more white than either parent.It is known that sabino-like patterns do exist in purebred Arabians, though studies at the University of California, Davis indicate that the gene (or genes) which produces sabino patterning in Arabians is not SB1, and SB1 has not been found to date in Arabians.The white spotting produced by the sabino trait in Arabians was at one time controversial, and body spotting was viewed as a sign of "impure" breeding, with such horses excluded from the registry.