CANINE COAT AND NOSE COLOR TEST
Cardigan Welsh Corgi

CODE: C128

DNA TEST:
Presence of black, "clear red", chocolate and sable colors, and mask.

BREED STANDARDS FOR COAT & NOSE COLORS:
There are two "a" alleles at the agouti locus in Cardigan Welsh Corgi (ay and at) which cause the two main underlying coat color patterns: sable-and-white and tricolor. Note that color terminology in Corgis is a bit confusing. Sable and red and fawn are different terms for dogs of the same agouti genotype. Other modifiers genes cause the difference in the tone of red or the relative amount of black hairs in the red coat. Although Cardigans are often called "black", solid black or black and white are not colors in this breed. The Cardigans called black are all tricolor dogs with black on the dorsal area and white on the ventral area, and a bit of tan in between. Each of these agouti colors may occur with or without Merle. At the present time there is no DNA test for merle, but since the merle pattern is exhibited by the "Mm" heterozygotes, the phenotype is predictive of the genotype. Note that "MM" dogs are primarily white and conscientious breeders avoid producing such dogs since deafness is typical and eye defects are also common. Each of these agouti colors may also occur with or without brindle. Corgis that have at least one ay allele will be brindle over most of the body, except on the white ventral surfaces. Dogs that are a^ta^t will have brindle only on their "points", i.e. they will be brindle where they would otherwise have had tan. At the present time, DNA testing is not yet available to detect the brindle allele.
DNA testing for the "a" alleles in Cardigan Welsh Corgis that are sable or tricolor allows breeders to better predict the colors of pups from particular matings. Although some breeders believe they can "see" the difference between a homozygous and heterozygous fawn, this has not been reliable. Brown occasionally occurs in Cardigans, which is due to a "bb" genotype at the B locus. DNA test results will also report the genotype at the B locus. There are two common alleles in Cardigans at the E locus: Em and E. Dogs with any combination of these alleles may be brindle. It is possible that the "e" allele occurs occasionally, although thus far it has not be found in this breed. Dogs that are "ee" can carry brindle and not have any black striping since they are not able to produce black or brown pigment. Note that the melanistic mask allele Em is dominant, but since many Cardigans have white on their muzzle, the black mask does not always show phenotypically.

LINKS:
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GENOTYPES:

Genotypes	Coat Color	Nose Color	HiddenColor
E^mE^mBBa^ya^y	sable with mask	black	-
E^mEBBa^ya^y	sable with mask	black	lack of mask
E^meBBa^ya^y	sable with mask	black	"clear red" to "pink", lack of mask
EEBBa^ya^y	sable	black	-
EeBBa^ya^y	sable	black	"clear red" to "pink"
eeBBa^ya^y	"clear red" to "pink"	black	sable
E^mE^mBba^ya^y	sable with mask	black	chocolate
E^mEBba^ya^y	sable with mask	black	chocolate, lack of mask
E^meBba^ya^y	sable with mask	black	chocolate, "clear to red" to "pink"
EEBba^ya^y	sable	black	chocolate
EeBba^ya^y	sable	black	chocolate, "clear red" to "pink"
eeBba^ya^y	"clear red" to "pink"	black	sablel, chocolate
E^mE^mbba^ya^y	sable with mask	brown	chocolate
E^mEbba^ya^y	sable with mask	brown	chocolate, lack of mask
E^mebba^ya^y	sable with mask	brown	chocolate, lack of mask, "clear red" to "pink"
EEbba^ya^y	sable	brown	chocolate
Eebba^ya^y	sable	brown	chocolate, "clear red" to "pink"
eebba^ya^y	"clear red" to "pink"	brown	chocolate, sable
E^mE^mBBa^ya^t	sable with mask	black	tan points, black-and-tan
E^mEBBa^ya^t	sable with mask	black	tan points, black, lack of mask
E^meBBa^ya^t	sable with mask	black	tan points, black-and-tan, "clear red" to "pink", lack of mask
EEBBa^ya^t	sable	black	tan points, black-and-tan
EeBBa^ya^t	sable	black	tan points, black-and-tan, "clear red" to "pink"
eeBBa^ya^t	"clear red" to "pink"	black	sable, tan points, black-and-tan
E^mE^mBba^ya^t	sable with mask	black	chocolate, tan points, black-and-tan
E^mEBba^ya^t	sable with mask	black	chocolate, tan points, black-and-tan, lack of mask
E^meBba^ya^t	sable with mask	black	chocolate, tan points, black-and-tan, lack of mask, "clear red" to "pink"
EEBba^ya^t	sable	black	chocolate, tan points, black-and-tan
EeBba^ya^t	sable	black	chocolate, tan points, blac-and-tan, "clear red" to "pink"
eeBba^ya^t	"clear red" to "pink"	black	sable, tan points, black, chocolate
E^mE^mbba^ya^t	sable with mask	brown	chocolate, tan points, black-and-tan
E^mEbba^ya^t	sable with mask	brown	tan points, black, lack of mask
E^mebba^ya^t	sable with mask	brown	tan points, black-and-tan, lack of mask, "clear red" to "pink"
EEbba^ya^t	sable	brown	chocolate, tan points, black-and-tan
Eebba^ya^t	sable	brown	chocolate, tan points, black-and-tan, "clear red" to "pink"
eebba^ya^t	"clear red" to "pink"	brown	chocolate, sable, tan points, black-and-tan
E^mE^mBBa^ta^t	black-and-tan with mask	black	-
E^mEBBa^ta^t	black-and-tan with mask	black	lack of mask
E^meBBa^ta^t	black-and-tan with mask	black	"clear red" to "pink, lack of mask
EEBBa^ta^t	black-and-tan	black	-
EeBBa^ta^t	black-and-tan	black	"clear red" to "pink"
eeBBa^ta^t	"clear red" to "pink"	black	black-and-tan
E^mE^mBba^ta^t	black-and-tan with mask	black	chocolate
E^mEBba^ta^t	black-and-tan with mask	black	chocolate, lack of mask
E^meBba^ta^t	black-and-tan with mask	black	chocolate, lack of mask, "clear red" to "pink"
EEBba^ta^t	black-and-tan	black	chocolate
EeBba^ta^t	black-and-tan	black	chocolate, "clear red" to "pink"
eeBba^ta^t	"clear red" to "pink"	black	chocolate
E^mE^mbba^ta^t	chocolate-and-tan with mask	brown	-
E^mEbba^ta^t	chocolate-and-tan with mask	brown	lack of mask
E^mebba^ta^t	chocolate-and-tan with mask	brown	lack of mask, "clear red" to "pink"
EEbba^ta^t	chocolate-and-tan	brown	-
Eebba^ta^t	chocolate-and-tan	brown	"clear red" to "pink"
eebba^ta^t	chocolate-and-tan	brown	chocolate, black-and-tan

SAMPLES:
One type of sample can be submitted for this DNA test: a blood sample in a lavender (EDTA) tube.
Blood can be collected by your veterinarian or a licensed veterinary technician and must be submitted with the HealthGene's submission form (download submission form).
HealthGene does not supply sample collection kits since your veterinarian will have the necessary supplies.
Collect 3ml of blood in a lavender (EDTA) tube from the dog. Do not freeze the sample at any time. Refrigeration is recommended if the sample will not be shipped on the day that it is collected.
Use the following couriers to ship samples to the laboratory:
1. Federal Express requires the outer rigid package be at least 7 x 4 x 2 inches in size. If it is smaller, it must be inserted into a plastic "Diagnostic Specimen Envelope" provided by them.
2. DHL Express requires the package be inserted into their green bag "lab pac". You should request one when you schedule a pick-up.

PRICE:
- $125.00 *
Special contract prices are available for Breeder Clubs. Please contact us for more information.

* - subject to the applicable taxes (5% GST Canadian Residents only)

TEST RESULTS:
Test results are usually available in 10 business days from the moment the samples arrive at the laboratory. Test results can be reported by e-mail, fax, or by phone.

CERTIFICATION OF RESULTS:
HealthGene will provide a certificate for each test result.

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CANINE COAT AND NOSE COLOR TESTCardigan Welsh Corgi

CANINE COAT AND NOSE COLOR TEST
Cardigan Welsh Corgi