Retriever colour variants
Can be these dogs siblings?
The answer is yes; surprisingly, it is possible.
It is proven by diagrams below - the parents of these puppies of Labrador Retriever have black and brown fur colour.
The fur colour is controlled by the production of two main pigments, eumelanin (brown to black) and pheomelanin (light to brown-red, red pigment). The puppy inherits one allele of a given gene from each parent. For the given trait, the animal inherits a pair of alleles of a given gene, one allele from the mother and one allele from the father. In the diagram, the dominant allele is marked with capital letter and the recessive allele with a small letter.
In Labrador Retrievers, three coat colours are permitted according to FCI-standard: black, brown and yellow and tests are performed for locus E (Extension), locus B (Brown) and locus D (Dilution).
Tests for all loci mentioned are performed by Genomia laboratory - continue to place an order and for detailed information:
The tests are performed on samples of blood or buccal swabs.
Genomia has prepared a summary of dog breeds carrying all combinations of E and B loci. There is a complete overview of colours of the offsprings and their probability of occurrence in a litter for the individual colours of the parents. To display the diagrams, click on the particular item.
- parents - black x black
- parents - black x black (combination of carriers of brown colour)
- parents - black x black (combination of carriers of yellow colour)
- parents - black x black (combination of carriers of brown and yellow colours)
- parents - black x brown
- parents - brown x brown
- parents - yellow x yellow
- parents - brown x yellow
- parents - black x yellow