Spotting factor

Spotting factor: Gene causing white spotting in the cat¹s coat.
Stop: Indentation on the bridge of the nose, usually between the eyes.
Stud: Male cat.

Spotting factor: Gene causing white spotting in the cat¹s coat.
SQ: Subcutaneous - under the skin. Also SC
Stop: Indentation on the bridge of the nose, usually between the eyes.

This breed of cat is a deliberate hybridization of the Siamese and the American Bicolor cats (American shorthair cats with the white spotting factor).

CALICO - Tortoiseshell and white. (XB/XR/, + white spotting factor). Tortoiseshell and white, blue tortie and white, chocolate tortie and white, cinnamon tortie and white, lilac tortie and white, fawn tortie and white.

Traditional Ragdolls possess the colorpoint gene that causes color concentration to the "point" areas (face, mask, ears, legs and tail) plus the white spotting factor gene that governs the white areas on the cat's body.

of the legs comes later, so the period of waiting for the glove markings to appear is an anxious one for Birman breeders, since the glove markings are the most difficult to perfect. The gene governing the trait is the dominant white spotting factor ...

This variety, however, is not the only kind of cat found on the island; other varieties include solid-colored cats, deeper-colored ticked cats that often have short, bobbed tails, and cats that display the white spotting factor.

The Van pattern is governed by the dominant white spotting factor piebald gene (S), which gives them patches of white along with spots of color.

See also: Spotting, White spotting, CFA, Champion, Genes