The Basics of Color
At each locus, a dog carries two genes, one from its sire and one from the dam. Agouti locus order of dominance: Sable, Black & Tan, Bi-Color, then Black.
These genotypes (gene-pairs) produce these phenotypes (exhibited traits)...
- a Sable gene (aw) + another gene = a Sable dog
- a Black & Tan gene (as) + a Bi-Color gene (at) = a Black&Tan dog
- a Black gene (a) + any other gene = a dog of the other color
A dog of this color (phenotype) can have these genes (genotype)...
The Color Matrix
||Black & Tan (as)
|aw + aw
||as + as
||at + at
||a + a
|aw + as
||as + at
||at + a
|aw + a
||as + a
|aw + a
The table below is designed to illustrate the relative probability of color pattern in a litter when the two genotypes are mated. The offspring genotype is in text, phenotype is color-highlited. White text signifies homogenous (same) genes. Bracketed genotypes indicate a surfaced recessive phenotype in the offspring, different from those exhibited by it's parents.
to download the PDF version of the Color Matrix above
Daryl - Ehret German Shepherds