K is dominant (solid black), kbr is brindle, and k is fawn. At the K loci is where the determination is made for brindle or fawn. Each puppy inherits one gene from each parent. Any dog of D-D loci, that is bred to a blue d-d, will produce an entire litter of D-d puppies, which are blue-carriers, but not blue. D-d and d-d dogs can produce blue offspring. This is what makes solid blue, blue brindle, blue fawn, blue pied, blue with tan points, blue masked fawn, blue sable fawn, and all other varieties of blue possible. Any pigment or hairs that would otherwise be black are diluted from black to blue on a “d-d” dog. Blue is a dilution which acts on black pigment as well as black-colored hairs. In other words, only “d-d” dogs are actually blue in color. “D” is a dominant allele over “d” so only dogs which have a “d-d” genotype will have a blue or dilute phenotype. The genotype “D-d” is what is typically called a “blue-carrier.” These dogs have a phenotype exactly the same as “D-D”. A genotype of “D-D” produces a pheontype of non-dilute, or non-blue. The possible alleles (or genes) at the D loci are “D” and “d.” Every dog is either “D-D,” “D-d,” or “d-d.” These are the genotypes. At each location is a pair of genes (Alleles).įor blue, the Loci, or location is called "D" for dilution. There are several genetic locations (Loci) that genetically determine a dog’s color genetically. You can also consider genotype is what is on the inside and phenotype is what is on the outside. Geno=gene and deals with what the dogs actual genes look like, while pheno (think P is for picture) deals with what the dog physically looks like or the physical picture of the dog. Rare Color Inheritance Patterns in Olde English BulldoggesĬolor patterns are determined at the genetic level by genotypes and phenotypes.
0 kommentar(er)
