Coat Color
Recessive Black
Alternative Names: Black
The Recessive Black variant is a rare cause of black coat color. The Recessive Black variant, also known as the "a" variant, is found in the ASIP gene (known as the A locus).
More Info
Did you know?
Shetland sheepdogs are unusual in that they do not carry the common dominant black variant, so all black-colored Shelties are recessive black.
How it works
Two copies of the Recessive Black variant are needed for a black coat to be seen, and also an absence of other coat modifying variants such as chocolate and recessive red.
Prevalence
1 in 10 dogs
has one or more copy of this genetic variant in our testing.
Technical Details
| Gene | ASIP |
|---|---|
| Also Called | Agouti (A) Locus |
| Variant | G>A |
| Chromosome | 24 |
| Coordinate | 23,393,552 |
All coordinates reference CanFam3.1
References & Credit
Credit to our scientific colleagues:
Kerns, J. A., Newton, J., Berryere, T. G., Rubin, E. M., Cheng, J. F., Schmutz, S. M., & Barsh, G. S. (2004). Characterization of the dog Agouti gene and a nonagouti mutation in German Shepherd Dogs. Mammalian Genome, 15(10), 798–808. View the article