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A Locus (Agouti)

A Locus (Agouti)

$50

(ONLINE PRICE)

Test Overview:

Understand allele inheritance: The A locus alleles follow a dominance hierarchy: Ay (sable/fawn) > aw (wolf sable/grey) > at (black and tan/tricolour) > a (recessive black). When planning breedings, knowing the genotype at this locus helps predict offspring coat colours. Consider interactions with other loci: Expression of A locus alleles depends not only on ASIP variants but also on the dog's genotype at the E (MC1R) and K loci. For agouti patterns to show, the dog must be ky/ky at the K locus (no dominant KB masking allele) and have dominant E alleles. Avoid unexpected coat colours: Genetic testing for the ASIP gene helps breeders avoid surprises in offspring coat colour by knowing which agouti alleles the parents carry. Do not consider A locus for health risks: The A locus does not cause health issues, so breeding decisions around it primarily focus on coat colour goals and breed standards. Strategic matings: To maintain or develop specific coat colours (like sable, black and tan, recessive black), select parents with the desired ASIP alleles while ensuring they meet other breed criteria and genetic health standards. Use genetic testing services: Utilise available commercial tests to confirm the agouti status of breeding dogs, especially in breeds where coat colour is a key trait or where breed standards require certain patterns. Breed standards adherence: Breed clubs often specify acceptable colours and patterns related to the A locus alleles, so breeders should align matings to these standards for show or recognition purposes

Category:

Trait (Associated with Phenotype)

Gene:

ASIP

Variant Detected:

Ay = A>G, Chr24:23393514, T>G, Chr24:23393510; aw/at = 239 bp insertion, Chr24:23365283-23365284; a = C>T, Chr24:23393552

Severity:

It is a trait and so is tested based on preference, not usually for health concerns.

Mode of Inheritance:

Autosomal Recessive

Recommended Screening:

Genetic testing of the ASIP gene will reliably determine if a dog is a carrier for A Locus Agouti.

Research Citation(s):

Dreger DL, Parker HG, Ostrander EA, Schmutz SM. Identification of a mutation that is associated with the saddle tan and black-and-tan phenotypes in Basset Hounds and Pembroke Welsh Corgis. J Hered. 2013 May-Jun; 104(3):399-406. [PubMed: 23519866] Dreger DL, Schmutz SM. A SINE insertion causes the black-and-tan and saddle tan phenotypes in domestic dogs. J Hered. 2011 Sep-Oct; 102 Suppl 1:S11-8. [PubMed: 21846741] Kerns JA, Newton J, Berryere TG, Rubin EM, Cheng JF, Schmutz SM, Barsh GS. Characterization of the dog Agouti gene and a nonagouti mutation in German Shepherd Dogs. Mamm Genome. 2004 Oct; 15(10):798-808. [PubMed: 15520882]

Associated Breed(s):

Affenpinscher, Afghan Hound, Airedale Terrier, Akita , Alaskan Malamute, American Bulldog , American Cocker Spaniel, American Eskimo Dog, American Foxhound, American Pit Bull Terrier, American Staffordshire Terrier, Anatolian Shepherd, Australian Bulldog, Australian Cattle Dog, Australian Cobberdog, Australian Kelpie, Australian Labradoodle , Australian Shepherd, Australian Silky Terrier, Australian Stumpy Tail Cattle Dog, Australian Terrier, Basenji, Basset Hound, Beagle, Bearded Collie , Bedlington Terrier, Belgian Groenendael Shepherd, Belgian Lakenois Shepherd, Belgian Malinois Shepherd, Belgian Tervueren Shepherd , Bernese Mountain Dog, Bichon Frise, Black Russian Terrier , Bloodhound, Boerboel, Border Collie, Border Terrier, Borzoi, Boston Bulldog, Boston Terrier, Bouvier Des Flandres, Boxer , Boykin Spaniel, Briard, British Bulldog, Brittany Spaniel , Bull Arab, Bull Terrier, Bullmastiff, Cairn Terrier, Canaan Dog, Cane Corso, Catahoula, Catahoula Leopard Dog, Cavalier King Charles Spaniel, Cavoodle, Chesapeake Bay Retriever , Chihuahua, Chinese Crested, Chow Chow, Clumber Spaniel , Cockapoo, Cocker Spaniel, Collie Rough, Collie Smooth, Coonhound, Coton De Tulear, Curly Coated Retriever, Dachshund , Dachshund Standard Long Hair, Dachshund Standard Smooth Hair, Dachshund Standard Wire Hair, Dalmatian, Dandie Dinmont Terrier, Dingo, Dobermann, Dogue de Bordeaux, English Setter , English Springer Spaniel, English Toy Spaniel , English Toy Terrier, Field Spaniel, Finnish Lapphund, Flat Coated Retriever, Foxhound , French Bulldog, German Shepherd Dog, German Shorthaired Pointer, German Spitz , Giant Schnauzer, Golden Retriever, Goldendoodle, Gordon Setter , Great Dane, Great Pyrenees, Greyhound , Griffon Bruxellois - Standard, Groodle, Harlequin Pinscher, Havanese, Havanese Terrier Toy, Hungarian Kuvasz, Hungarian Vizsla, Ibizan Hound, Irish Setter, Irish Terrier, Irish Wolfhound, Italian Greyhound, Italian Spinone, Jack Russell Terrier, Jagd Terrier, Japanese Chin, Japanese Shiba Inu, Japanese Spitz, Kaninchen Dachshund, Keeshond, Kerry Blue Terrier, Komondor, Koolie , Labradoodle , Labrador Retriever, Lagotto Romagnolo, Lakeland Terrier , Lancashire Heeler, Landseer ECT, Lapponian Herder, Leonberger, Lhasa Apso, Lowchen, Maltese, Manchester Terrier , Maremma Sheepdog, Mastiff , Miki, Miniature American Shepherd, Miniature Bull Terrier, Miniature Dachshund Long Hair, Miniature Dachshund Smooth Hair, Miniature Dachshund Wire Hair, Miniature Fox Terrier, Miniature Pinscher , Miniature Poodle, Miniature Schnauzer, Miniature Yorkshire Terrier, Mixed Breed, Mountain Dog , Munsterlander, Murray River Retriever, Neapolitan Mastiff, Newfoundland, Norfolk Terrier , Norwegian Elkhound, Norwich Terrier, Nova Scotia Duck Tolling Retriever , Old English Mastiff , Old English Sheepdog , Papillon, Parson Russell Terrier, Pekingese, Pembroke Welsh Corgi, Peruvian Hairless Dog, Plott Hound, Pomeranian, Portuguese Water Dog, Pug, Puli, Rat Terrier, Rhodesian Ridgeback , Rottweiler , Saint Bernard , Saluki, Samoyed, Schipperke, Schnoodle, Scottish Deerhound, Scottish Terrier , Sealydale Terrier, Sealyham Terrier , Shar Pei, Sheepadoodle, Shetland Sheepdog, Shiba Inu, Shih tzu, Shmoodle, Shoodle, Short Bully, Shortybull, Siberian Husky, Silky Terrier , Skye Terrier, Sloughi, Smithfield, Smooth Fox Terrier, Soft Coated Wheaten Terrier, Spoodle, Staffordshire Bull Terrier , Standard Poodle, Standard Schnauzer, Sussex Spaniel, Swedish Lapphund, Tenterfield Terrier , Tibetan Mastiff, Tibetan Spaniel, Tibetan Terrier , Toy Fox Terrier, Toy Poodle, Volpino Italiano, Water Spaniel , Weimaraner, Welsh Springer Spaniel, West Highland White Terrier , Whippet , White Swiss Shepherd, Wire Fox Terrier, Xoloitzcuintle (Mexican Hairless), Yorkshire Terrier,
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