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Coat Colour: B Locus (Brown Coat Colour)

Test number: 8023

Breeds
All Dog Breeds , American Cocker Spaniel , Australian Shepherd , Bedlington Terrier , Border collie , Cardigan Welsh Corgi , Dachshund , Dalmatian , Doberman Pinscher , English Cocker Spaniel , Flatcoated Retriever , Fox Terrier , French Bull Dog , Galgo Espanol , German Longhaired Pointer , German Shorthair Pointer , Gordon Setter , Griffon Bruxellois , Irish Soft Coated Wheaten Terrier , Koolie ( Australian Koolie ) , Labrador Retriever , Miniature Pinscher , Newfoundland , Pointer , Portuguese Waterdog , Scottish Terrier , Weimaraner .
Description

The B locus is responsible for the presence of brown, chocolate, or liver coat colour. It is also responsible for nose colour. In breeds where the A locus does not come into play, any dog that has at least one B allele (and is not 'ee'), will be black in the pigmented areas of the coat. If the dog has two copies of any of several b alleles will be brown. There are at least three such b alleles. Regardless of other loci, any dog with at least one B allele will have a black nose and pads, while those with any two b alleles will have a liver nose and pads.

This test checks if the dog carries 0, 1 or 2 copies of the mutations typically responsible for the brown coat colour, which is also known in some breeds as liver, chocolate, sedge, and less frequently, red. There are three primary 'b' mutations that are responsible for nearly every liver or chocolate dog. A notable exception is the French Bulldog where in addition to these three mutations, there is a fourth cause of chocolate that has yet to be identified.

In some breeds such as Gordon Setter this coat colour is referred to as liver.

 
Further reading
Coat Colour Inheritance ChartsHTML file
Brittany Coat ColoursPDF file
B Locus Inheritence ChartPDF 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
1 - 2 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: K- Locus  
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)  

 
 
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LABOKLIN GmbH & Co. KG
ISO / DIN 17025 Accredited Laboratory
© 2007 Laboklin (UK)
125 Northenden Road, Manchester, M33 3HF
Tel. 0161 282 3066