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)...
|Black & Tan (as)
The Color Matrix
This table 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.
Phenotype: The exhibited trait
Genotype: Phenotype and its recessive gene
White Lettering: Homogenous Traits (duplicate)
Black Lettering: Heterogenous Traits (differing)
[Brackets]: Progeny's phenotype is different from either parent's phenotype