B-Locus (chocolate/cinnamon)

The B-Locus is a region of your cat's DNA which controls whether your cat has a brown coat colour.

There are two alleles, or mutations, present in the B-locus which cause your cat's coat colour to be brown; b, and b^l. If your cat has inherited any two of them with one coming from each parent then this will cause a brown coat to be expressed. The wild type black coat colour (B) is visible if no copies of b, or b^l are present, or if only one copy of either b, or b^l is present. If your cat only has one copy of b, or b^l, then they carry brown and have the potential to produce brown kittens if mated with a brown or brown carrying cat. 

The black or brown colourations are caused by mutations on the TYRP1 gene. Brown is recessive meaning two copies of b are required to alter the black colouration to brown.

Results:

Your results will be reported as one combination of the B-locus alleles with the following interpretations.

Scientific references: