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B
B locus — black series
Controls: Whether the black pigment shows as black, chocolate or cinnamon.
How it works
The B locus sets the 'black series' of eumelanin. The dominant B gives black; the recessive b gives chocolate; the most recessive bl gives cinnamon. Dilution (the D locus) then softens each of these.
Alleles
BBlackDominantbChocolateRecessiveblCinnamonRecessiveColours it produces
Frequently asked questions
Can a black cat carry chocolate?+
Yes — black is dominant, so a black cat can hide a recessive chocolate or cinnamon allele and pass it to kittens.
Related genes
See these colours on real cats.
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