Base colors
Extension gene
The extension gene controls the production of black and red pigment. It is one of the genes that determines the base color of horses.
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Agouti gene
The agouti gene controls the distribution of black on the coat. It is one of the genes that determines the base color of horses.
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Modifiers
STX17 gene
The STX17 gene is responsible for the color grey in horses.
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Dilutions
MATP gene
The MATP gene is responsible for the dilutions cream, pearl, sunshine and snowdrop in horses.
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TBX3 gene
The TBX3 gene is responsible for the dilution dun and non-dun1.
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PMEL17 gene
The PMEL gene is responsible for the color silver in horses.
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