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Coat Colours: K- Locus

Test number: 8145

Please note that this test will only check for the KB and ky alleles, it does not check for the kbr (brindle). Laboklin no longer offers a test for Brindle.
Breed
All Dog Breeds .
Description

The K locus plays a pivotal role in coat colour. This locus is a relative newcomer in our understanding of canine colour, and includes traits formerly attributed by some to other genes.

The dominant allele in the series is KB, which is responsible for self-colouring, or solid coloured fur in pigmented areas. This trait was formerly attributed to the Agouti (A) locus as AS, but recent breeding studies had shown this not to be the case.

There are two other alleles, kbr, and ky. KB is dominant to both kbr and ky, while kbr is dominant only to ky. kbr is responsible for the brindle. The recessive allele, ky, allows the basic patterns of the A locus to be expressed. So too does the kbr allele, but with brindling of any tan, fawn, or tawny areas. Any animal with at least one KB allele will be self-coloured.

Any animal with at least one kbr allele, and no KB alleles will be brindled on agouti background (see A locus). Any animal with two ky alleles will show agouti patterns (see A locus). and ky


LABOKLIN can presently test for these two alleles. In some breeds, where no brindle is present, this represents a complete analysis of the locus. An example would be the Pug. In breeds where the breed standard disqualifies all but self-colored dogs, testing for these two alleles is once again all that is needed. Any animal with two KB alleles cannot produce anything except self-coloured offspring. A prime example here is the Labrador retriever. In breeds where many variations are allowed, these tests can help predict the probability of potential litters to include fawn, sable, tawny, tan point, tricolor or recessive black puppies.

 
Further reading
Coat Colour Inheritance Chartshtml file
Brittany Coat ColoursPDF file
Sample Requirements
Whole blood in EDTA tube (0.5 - 1 ml) or Buccal Swabs. Whole blood in EDTA tube (0.5 - 1 ml) or Buccal swabs. .
Turnaround
2 - 3 weeks
Price
Number of Coat Colour Tests on the same dog Price (including VAT)
First Colour test £ 48.00
Each additional colour test on the same dog £ 24.00

To order:

  • Download Order Form from this link pdf

  • Complete the order form and send it together with your samples to the following address:

    Laboklin (UK),   125 Northenden Road, Manchester, M33 3HF

See Also:
Coat Colours: E-Locus E1 (yellow, lemon, red, cream and appricot)  
Coat Colour DNA bundle: Loci A + B + D1 + E1 + K  
Coat Colours: A-Locus Agouti ( fawn, sable, black and tan/tricolor, recessive black)  
Coat Colours: D-Locus D1 ( Dilution )  
Coat Colours: EM-Locus Melanistic Mask Allele (Em), E-Locus  
Curly Coat  
Furnishings and Improper Coat  
Coat Colour EG- Locus (domino, grizzle)  
Coat Colour: EH-locus (sable)  
Coat Colour: S-locus (piebald, spotted white)*  
Hairlessness  
Harlequin  
Saddle Tan  
Coat (hair) Length I  
Coat (hair) Length II  
Panda White Spotting  
C Locus (Albino)  
Coat Colour: D2 - Locus ( Dilution )  
D Locus D1 + D2 ( Dilution )  
Coat Length I + II ( Long or Shor Hair)  
Coat Colours: E-Locus E2 (Red / Yellow)  
M Locus * / Merle Gene / Dapple (merle / Cryptic Merle)  
Coat Colour: B Locus (Brown Coat Colour)  

 
 
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LABOKLIN GmbH & Co. KG
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© 2007 Laboklin (UK)
125 Northenden Road, Manchester, M33 3HF
Tel. 0161 282 3066