 Tobiano markings do not usually occur on the stifle and flanks, while sabino leg markings frequently run into these areas; a clearly tobiano-marked horse with white that runs up the legs to the stifle and flanks is likely also a sabino.Due to the additive effect of multiple white spotting genes, tobiano-sabino blends may have more white than is otherwise expected.Some horses may simultaneously carry genes for both the tobiano spotting pattern and for sabino.