Tricolor In The American Bully
The Tan Point allele (at), which is one of four alleles in the Agouti (A) gene series, is responsible for the tricolor coat pattern and traditional tan points in dogs. It is a recessive genetic trait that will require two copies for the tan point coat color pattern expressing itself. One duplicate of the gene is inherited from the sire, and the other from the dam. Because of its recessive characteristics, the tan point gene can remain hidden for generations, until two copies are inherited. A dog can be considered a tan point carrier without actually expressing tan tips.
Merle, Tri, Champagne American Bullies
TriLine’s Raven IS USUALLY A Black Tricolor American Bully
The tricolor pattern requires the tan point gene, and involves 3 well-defined colors – one base color, white, and tan. The base color can be anybody of a range of colors (dark-colored, blue, lilac, chocolate), can be influenced by dilution (d/d) and depth, or another pattern, such as merle or piebald. The tan and white can also contain other patterns.
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Tan items can be invisible by White, Dominant Dark (K) or Recessive Red (e/e). Your dog without any obvious tan items, or tan tips that are completely concealed by white, Dominant Dark, or recessive red, wouldn’t normally be considered “tricolored” by definition, even if it’s homozygous (has 2 copies) for traditional tan factors. Why not? Because all of the conditions for using the word “tricolor” must be present.
Champagne Tricolor American Bully
Lilac Tricolor North american Bully Pup. TriLine’s MightyMouse
Those conditions are:
Genetically at/at. (at/a possible but rare)
Traditional tan points, white, and basics color must all be apparent, even if in small amounts. By definition, the word TRIcolor refers to a design of 3 colors.
Traditional tan points must be present and obvious in at least one of the 13 traditional locations, even if it is merely tan ticking.
No traditional tan factors? Not tricolor. No white? Not tricolor. Not at/at (or at/a)? Not tricolor.
A dog that has traditional tan items, is genetically at/at, but lacks white would be bicolor, not tricolor.
Your dog that is solid white, Dominant Black, or Recessive Red (e/e), but genetically at/at would simply be homozygous for Tan Point, definitely not Tricolor, because tan details would be hidden in those circumstances. However, such your dog may be able to produce Tricolor and Tri Carrier offspring. In conditions of imperfect dominance, both Dominant Black and Tan Point may be expressed, nevertheless the tan items may appear faded, which is recognized as “Ghost Tan”. Imperfect dominance of the Dominant Black (K) allele is in charge of Ghost Tan and Seal.
Your dog that is all white with ticking, and genetically at/at, would most likely be looked at tricolored, because the ticking would be tan where traditional tan tips would normally be located on the dog, and will be a bottom color everywhere else.
Where does the American Bully receive the tricolor gene from?
The tan point gene has been around the American Bully and American PIT BULL breeds since inception. In a few early American PIT BULL bloodlines, the tan point gene comes from crossings between Simple Fox Terriers and Bulldogs in the first 19th Century. The Steady Fox Terrier likely inherited Tan Point from Dark & Tan Terriers of the 18th Century.
Black color & Tan Bull Terriers are also part of the heritage of the North american PIT BULL. Dark colored & Tan Bull Terriers were imported from Ireland in the 1800’s and became part of the North american Pit Bull Terrier recipe.
The American Staffordshire Terrier was established decades following the the American PIT BULL was established. The Tan Point gene taken onward from the American Pit bull to the North american Staffordshire Terrier, and then also to the North american Bully breed.