this test enables you to identify if a dog is docked or has a natural short tail. This conditioned is caused by the Brachyury mutation, the trait of inheritance is autosomal dominant which means that dogs who carry one or two copies of the mutation will have a natural short tail. Dogs with two copies of the normal gene will have normal tail.
Normal: The dog have two copies of the normal gene and will have a normal tail.
Heterozygous: The dog carries one copy of the normal gene and one copy of the mutant gene, the dog has a natural short tail. Heterozygous dogs can pass the mutation to their offspring with a probbility of 50%.
Homozygous for the mutation: the dog carries two copy of the mutant gene and has a natural short tail. The dog will pass the mutation to its entire offspring who will all have natural short tail.
In six breed additional studied there is no correlation between the analysed mutation and a short tail: Boston Terrier, English Bulldog, King Charles Spaniel, Miniature Schnauzer, Parson Russell Terrier, Rottweiler