Cats
a gene which limits the amount of white. Lockets - those small spots on the throat, chest,
stomach and groin of otherwise solid coloured cats also seem to be due to a different gene -
one which is normally hidden by the more extensive white spotting of piebald cats. There is
also the phenomenon of white toes occurring on otherwise coloured cats.
In the York Chocolate breed, there is a particular white displacement in bicoloured
individuals. The placement of white maintains the same configuration in all successive
generations. This has been termed "Spotting Particolour" and may be due to an allele
(variant) of the White Spotting gene. According to this theory, the White Spotting gene
appears to have 4 variants: non-spotted, spotted, particolor, and Birman mitted. Spotted is the
dominant form and is variable expressed. Non-spotted is the recessive wild-type and
produces a coat without white
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