Colour and Trait Information

Coat Colour and Trait Tests

Petagenics® offers testing for common coat colours and traits. Some genes have more than one mutation, such as those genes involved in Agouti and determining a brown coat colour. The tests for those variants have been combined for simplicity in ordering. To learn more, just click any of the coat colour or trait names below.

Coat Colour Tests

The Petagenics® A locus (Agouti) coat colour test evaluates the ASIP gene for the presence of the various agouti alleles, Ay, aw, at, and a. Genetic testing of the agouti coat color loci for the variants of the ASIP gene, Ay, aw, at, and a, will determine whether a dog is a genetic carrier of sable/fawn coat color (Ay/Ay, Ay/aw, Ay/at, or Ay/a), allows for agouti gene expression producing a "wolf" sable/gray coat color (aw/aw, aw/at, or aw/a), a black and tan, tricolor, or tan points coloration (at/at or at/a), or does not allow agouti gene expression producing a solid black or bicolor coat (a/a).

The Petagenics® B locus (Brown) coat colour test evaluates the TYRP1 gene for all three brown variants (bc, bd, and bs) to determine the overall B locus genotype for the dog. Dogs with B/B and B/b genotypes can have a black coat, whereas dogs with a b/b genotype can have a brown coat. However, the dog's coat colour is also dependent on the dog's genotypes at the E, K, and A genes among others. The B locus also determines the colour of the dog's nose and foot pads, regardless of the dog's genotypes at the E, K, and A genes.

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Alopecia, Black hair follicular dysplasia, Blue Doberman syndrome, coat colour dilution, Colour dilution alopecia, Colour mutant alopecia, D locus, D-allele, D-locus, Dilution gene, BHFD, CDA

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black coat colour, E locus, E/e locus, extension locus, red coat colour, yellow coat colour

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black mask coat colour, E locus, Em locus, extension locus, melanistic mask coat colour

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Agouti expression locus, dominant black coat colour, K locus, KB locus, ky locus

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Trait Tests

Cu locus, curly coat trait, straight coat trait, wavy coat trait

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The Hr Locus (Hairless) impacts the presence or absence of a coat on certain breeds of dog. A DNA variant in the FOXI3 gene, an important gene during early embryonic development, disrupts the normal development of hair and teeth in the dog which can result in sparse or absent hair as well as missing or abnormally shaped teeth.

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The improper coat/furnishings (IC) Locus determines if a dog will have longer hair around the muzzle and eyebrows (facial furnishings) or a lack of furnishings (called improper coat in breeds for which facial furnishings are standard). A DNA variant in the RSPO2 gene, which functions in hair follicle development, results in the production of furnishings in multiple breeds and is found in all wire-haired dogs.

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L locus, long hair trait, longhaired trait, short hair trait, shorthaired trait

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