Post by Haley on Jan 12, 2010 15:30:05 GMT -6
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Pinto Patterns: Pinto is a term that refers to several different patterns of white. The patterns fall into two catagories, tobianos and overos. The overo catagory includes frame overo, sabino, and splash white. A horse with a combination of tobiano and one or more overo patterns is known as a tovero.
The tobiano pattern is dominant, and it is characterized by white crossing the horse's back between the withers and the dock, as well as by areas of color on the head, chest, and flanks. Most tobianos have normal face markings like stars and blazes, and they almost always have four white feet. Heterozygous is (nT) and homozygous is (TT).
This is Skip A Raindrop owned by Rocklyn Paints. She exhibits a minimal tobiano pattern as well---again, note the white patches on her withers and above her tail. Those prove she is a tobiano and not an overo, as the spot on her side might lead one to believe.
A typically marked tobiano---note the all white topline and the characteristic patches of color on the head, chest, and flanks. Tobianos frequesntly have spots with rounded edges.
This is The Eagle's Gift, a lovely tobiano Paint mare who exhibits cat tracks, the small spots on her shoulder. Cat tracks are often somewhat roany looking and are typical of homozygous tobianos.
Frame overos are characterized by having a dark topline between the withers and dock, with blocks of white on their sides and necks. Frame overos usually have large blazes or apron markings.The feet are usually dark, but may be white if combined with the tobiano, sabino, or splash genes. Heterozygous is (nO).
This is Cupid's Snoopie Leo owned by Happy Trails. He is a typically marked frame overo with a wide blaze, spotting on his sides, and no socks.
Another lovely example of frame overo, this one with a bit more white, likely due to the presence of sabino.
A filly owned by Painted Badlands Ranch who exhibits an extreme overo pattern. Note that her topline is still dark from the withers to the tail. She very likely also has the sabino pattern.
Sabino is a pattern that comes in many forms. In its minimal form, it only manifests itself as small socks and a star or blaze, if that. More extreme sabinos will have white patches, often with roaned edges, creeeping up their sides from the underside of the belly. The most extreme sabinos will look entirely white or almost so, often retaining a few patches of color along their toplines, particularly on the ears or in the mane. Heterozygous is (nSb) and homozygous is (SbSb).
This is Marquetry, a minimally marked sabino. Note the odd spot on his left front knee and white chin, typical sabino indicators.
This is Airdrie Apache, a more boldly marked sabino.
This handsome guy is Puchingui, sire of many modern sabino TBs.
This is The White Fox, an extreme sabino son of Patchen Beauty. His first four dams tail-female are white extreme sabinos. Quite a remarkable family.
Splash white horses look as if they've literally been splashed with white paint from the underside or dipped in white paint. Splash white is an incomplete dominant. Homozygous spashes will have more white than heterozygous splashes. Splash markings tend to have smooth, crisp edges, and most splashes have blue eyes (especially the homozygous ones). Heterozygous is (nSpl) and homozygous is (SplSpl).
A minimally marked splash white. He is likely a heterozygous splash.
Another fairly minimally marked splash.
A very typically splash white foal.
A more extremely marked splash white. Definitely a homozygous splash.
All pinto patterns can range from minimal expressions (a nearly solid colored horse) to extreme expression (an all-white or nearly all-white horse). White horses resulting from tovero and sabino patterns are completely viable. White horses that are homozygous for frame overo (OO), however, are known as lethal white overos (LWO).
A lethal white overo. This foal died shortly after birth.
This is Oroneeka, a Spanish Mustang exhibiting the tovero pattern, a combination of tobiano and overo.
This is an extreme variation of the tovero pattern known as Medecine Hat. The horse only retains color on it's flanks, around the eyes, and over the ears.
This is Designated Hitter, another tovero who exhibits the Medecine Hat pattern.
Pinto Patterns: Pinto is a term that refers to several different patterns of white. The patterns fall into two catagories, tobianos and overos. The overo catagory includes frame overo, sabino, and splash white. A horse with a combination of tobiano and one or more overo patterns is known as a tovero.
The tobiano pattern is dominant, and it is characterized by white crossing the horse's back between the withers and the dock, as well as by areas of color on the head, chest, and flanks. Most tobianos have normal face markings like stars and blazes, and they almost always have four white feet. Heterozygous is (nT) and homozygous is (TT).
This is Skip A Raindrop owned by Rocklyn Paints. She exhibits a minimal tobiano pattern as well---again, note the white patches on her withers and above her tail. Those prove she is a tobiano and not an overo, as the spot on her side might lead one to believe.
A typically marked tobiano---note the all white topline and the characteristic patches of color on the head, chest, and flanks. Tobianos frequesntly have spots with rounded edges.
This is The Eagle's Gift, a lovely tobiano Paint mare who exhibits cat tracks, the small spots on her shoulder. Cat tracks are often somewhat roany looking and are typical of homozygous tobianos.
Frame overos are characterized by having a dark topline between the withers and dock, with blocks of white on their sides and necks. Frame overos usually have large blazes or apron markings.The feet are usually dark, but may be white if combined with the tobiano, sabino, or splash genes. Heterozygous is (nO).
This is Cupid's Snoopie Leo owned by Happy Trails. He is a typically marked frame overo with a wide blaze, spotting on his sides, and no socks.
Another lovely example of frame overo, this one with a bit more white, likely due to the presence of sabino.
A filly owned by Painted Badlands Ranch who exhibits an extreme overo pattern. Note that her topline is still dark from the withers to the tail. She very likely also has the sabino pattern.
Sabino is a pattern that comes in many forms. In its minimal form, it only manifests itself as small socks and a star or blaze, if that. More extreme sabinos will have white patches, often with roaned edges, creeeping up their sides from the underside of the belly. The most extreme sabinos will look entirely white or almost so, often retaining a few patches of color along their toplines, particularly on the ears or in the mane. Heterozygous is (nSb) and homozygous is (SbSb).
This is Marquetry, a minimally marked sabino. Note the odd spot on his left front knee and white chin, typical sabino indicators.
This is Airdrie Apache, a more boldly marked sabino.
This handsome guy is Puchingui, sire of many modern sabino TBs.
This is The White Fox, an extreme sabino son of Patchen Beauty. His first four dams tail-female are white extreme sabinos. Quite a remarkable family.
Splash white horses look as if they've literally been splashed with white paint from the underside or dipped in white paint. Splash white is an incomplete dominant. Homozygous spashes will have more white than heterozygous splashes. Splash markings tend to have smooth, crisp edges, and most splashes have blue eyes (especially the homozygous ones). Heterozygous is (nSpl) and homozygous is (SplSpl).
A minimally marked splash white. He is likely a heterozygous splash.
Another fairly minimally marked splash.
A very typically splash white foal.
A more extremely marked splash white. Definitely a homozygous splash.
All pinto patterns can range from minimal expressions (a nearly solid colored horse) to extreme expression (an all-white or nearly all-white horse). White horses resulting from tovero and sabino patterns are completely viable. White horses that are homozygous for frame overo (OO), however, are known as lethal white overos (LWO).
A lethal white overo. This foal died shortly after birth.
This is Oroneeka, a Spanish Mustang exhibiting the tovero pattern, a combination of tobiano and overo.
This is an extreme variation of the tovero pattern known as Medecine Hat. The horse only retains color on it's flanks, around the eyes, and over the ears.
This is Designated Hitter, another tovero who exhibits the Medecine Hat pattern.
