Merle Border Collie Genetics

If it has two copies it is a double merle homozygous merle and is usually mostly white with eye and ear defects.

Merle border collie genetics. Australian Red black pigment AtAt. This is because although the merle gene is considered dominant it is actually quite rare in Border Collie breeds. An allele that dilutes whatever the base color is.

As Michael Parker and I explained earlier a dog is either a merle or it is not. The dog will have merle patterning over its eumelanin. Because it is unable to make eumelanin in its coat and the merle gene only affects eumelanin black liver blue and isabella.

Color A B D E K. A black and white a red merle a red and a blue and tan blue tri puppy. 12052019 Genetics are a tricky thing and even trickier when talking about the blue merle Border Collie.

Genetics Genetics can be tricky and complicated but to simply put it a dogs coat color is a result of two base colors a dominant and a recessive gene that it will inherit from its parents. 22112019 Blue Merle Border Collie breeding. However occasionally merle can be hiddenby other genes.

Pedersen and staff has developed a panel of short tandem repeat STR markers that will determine genetic diversity across the genome and in the Dog Leukocyte Antigen DLA class I and II regions. A Merle dog can be either homozygous with genotype MM or heterozygous with a genotype Mm. For a pup to possess this color one of its parents should carry the merle gene or the incomplete gene.

They commonly have a white chest and an overall gray coat with some patches of black on their ears face back and tail. One litter may contain for example. If a dog has one copy of the mutant gene it shows the characteristic pattern.