GENE A |
ay |
Produces solid color, as in red (or solid black). |
at |
Produces black with markings. |
|
ay is dominant over at. |
GENE B |
B |
Produces black pigment in nose, foot-pads, eye-rims, and coat. |
b |
Produces brown or chocolate pigment in nose and eye-rims.
Produces chocolate or lighter red-brown in coat. |
GENE C |
C |
Produces deep color, as in dark red, chocolate & rust, and black & rust. |
GENE D |
D |
Regulates heavy pigment in each hair strand. |
d |
Dilution gene produces blue and fawn (dilutes black to blue, chocolate to fawn). |
GENE E |
E |
Manipulates the formation of black, chocolate, or dark pigment in hairs to shape markings.
Some forms of E are not accepted by the AKC standard. |
GENE G |
G |
Changes uniform puppy coat to pale or gray shading as dog matures.
Not accepted by the AKC standard. |
g |
Produces constant pigmentation. |
GENE M |
M |
Produces harlequin (merle); causes blindness, deafness, impotence.
Not accepted by the AKC standard. |
m |
Uniform pigmentation. |
GENE P |
P |
Forms normal pigmentation. |
p |
Reduces black coats to "lilac" and chocolate to light-yellow fawn.
Not accepted by the AKC standard. |
GENE S |
S |
Produces solid coat with no white spots. |
sp |
Produces parti-colored (spotted) coats.
Not accepted by the AKC standard. |
GENE T |
T |
Produces flecks or "ticking" in light areas.
Not accepted by the AKC standard. |
t |
Produces clear, unticked coat. |
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