In many breeds where the occasional
tan point dog is viewed as unwanted, the k test is still warranted since the majority of dogs have two copies of this at mutation, but do not express it because of the presence of an overriding KB.
Not exact matches
This
dog carries two copies of ky which allows for the expression of the agouti gene (A locus) which can result in a variety of coat colors including sable / fawn, tricolor,
tan points, black or brown.
Dogs with one or two copies of KB will not express agouti coat colors (sable / fawn, tricolor, black and
tan, or
tan points) and their coat color would be solid in pigmented areas as determined by the E and B genes.
Dogs in many other breeds, where brindle is never found, could be either the more - dominant «Labrador black» or the more - recessive kyky which could be saddle black - and -
tan or bi - color /
tan -
point in pattern.
Beta - defensin 103 (CBD103), referred to as «dominant black» by
dog breeders for decades, or more recently as «K.» (Like «recessive black» this is a
dog without
tan points which has either a black or liver coat color.)
A brindle
dog mated to a sable
dog could produce brindle puppies, and a brindle
dog mated to a dark
dog with
tan points could produce black with brindle -
pointed pups.
Tan point patterns are standard on certain other breeds of
dogs, such as the Doberman, certain spaniels, dachshunds, and black and
tan coonhounds.
Brindle can not be detected at all in
dogs that do not have
tan trim and is often unrecognized in
tan -
pointed Aussies because of the variation allowed in
tan points.
Any of these
dogs that are not yellow (ee) will have
tan points.
Any
dog that is atat or ata (and no KB) will have
tan points, either with or without brindling.
Vetgen is now offering a test for a mutation that is found in all
tan point, phantom, tricolor, and «black /
tan, chocolate /
tan and liver /
tan»
dogs.
A black and white
dog with
tan point markings is often referred to as the CLASSIC TRI as it is considered by many to be the typical Rat Terrier color and a common favorite.
In blue
dogs with
tan points (Yorkies and Dobermans) the
tan areas retain a normal appearance.