Genetic origin and mechanism

Several variants can produce white or nearly white phenotypes, particularly in the KIT region. Not every white horse should therefore be assigned to one mutation.

Development and variations

Unlike gray, the horse does not progressively change from a colored birth coat to white, although small pigmented areas may remain.

Possible confusions

The main confusion is a very light gray horse. Skin color around the eyes and muzzle, together with the birth color, helps separate them.