A-locus (alleles: Ay, Aw, at, a)

The A-locus regulates the distribution of light and dark pigment. Common names for colours... more
Disease
The A locus is responsible for a number of common coat patterns in the dog. Expression of the A-locus requires any combination of two ky or kbr alleles at the K locus, and at least one E or EM allele at the E locus. The Agouti gene and its variations determine the coat colours fawn / sable (Ay), wild type (aw), tan points (at), and recessive black (a). Ay is dominant to Aw, Aw is dominant to at, at is dominant to a.
Breed
All breeds
Heredity
Ay > Aw > at > a
Test duration
about one week after arrival of the sample in the lab
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