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Coat colours in cats
What are 'coat colours'?
DNA tests for coat colours
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A-locus (the extension of the eumelanin)
testing for A and a
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B-locus (the colour of the eumelanin)
testing for B, b and b1
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C-locus (the restriction of melanin)
testing for C, cb and cs
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D-locus (the distribution of pigment granules)
testing for D and d
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Breeds that can be tested
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A-locus (tabby pattern or solid colour) |
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B-locus (black, chocolate or cinnamon) |
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C-locus (full colour, Burmese or Siamese) |
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D-locus (intense colouration or diluted colour) |
Breeding policy
Testing for coat colours
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Note:
In cats, as in other species, there are many genes (loci) that influence the colour of the coat
and the skin. The main effects on coat colour are caused by the A-, B-, C-
and D-locus. It should be kept in mind that the same genes may produce different
colour shades in different breeds because, apart from the genetic make-up, what we see is
affected by the length and other aspects of the structure of the coat. With the availability
of DNA-marker techniques coat colour genetics recently got a new impulse. Through this website
we will keep you informed about the availability of DNA tests for other coat colour genes.
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