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Color Modifiers Modifiers alter the appearance of the base coat but do not dilute it. Flaxen (F) Flaxen is a recessive modifier that lightens the mane and tail of chestnut horses.  Inheritance Genotype Result F/F Flaxen F/f ...

Dilution Genes Dilution genes lighten or alter the base coat color. Cream (CR) Cream is an incomplete dominant dilution. One copy creates a single dilute, while two copies create a double dilute. Single Cream Base Result Chestnut Palo...

Tobiano (TO) Tobiano is a dominant white pattern gene that creates smooth, rounded white patches that often cross the topline. Inheritance & Expression Genotype Result TO/TO 25% Expressive Tobiano 75% Medium Tobiano TO/n ...