Sabino horse
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Sabino describes a distinct pattern of white spotting in horses. In general, Sabino patterning is visually recognized by roaning or irregular edges of white markings, belly spots, white extending past
A horse with classic sabino belly spots, white above its knees and hocks, a white chin and wide white facial markings.
A sabino horse with extensive roaning
A Thoroughbred horse that carries the W5 allele and has sabino patterning
Sabino patterns have long existed in Arabians
Overo
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Overo refers to several genetically unrelated pinto coloration patterns of white-over-dark body markings in horses, and is a term used by the American Paint Horse Association to classify a set of pint
Sabino horse
…used in mouse research. Neither Sabino 1 or any other alleles of W are linked to lethal white syndrome (LWS). LWS occurs when a foal is homozygous for frame overo, which is a mutation on a different gene, EDNRB. Some of the genes in the W allelic series are embryonic lethal when homozygous and only one copy was…
A frame overo
Frame overos have sharply defined, irregular, horizontally oriented white patches. As here, they are often bald-faced and white patches seldom cross the topline, creating a "frame" of non-white coat.
A splash overo with some minor sabino traits