Posts Tagged ‘black spot mutation’

(Source for the image)

This dog has the black spot phenomenon on his face.

The black spot phenomenon happens in golden and yellow Labrador retrievers  when dog experiences a somatic mutation that turns the e/e to E/e.  e/e is the genotype that produces the yellow to red coat color in golden retrievers and yellow Labs.  If they had the E/e  or E/e genotype, they would either be black dogs or liver/chocolate dogs.

It’s not a really a birthmark. It’s just a somatic mutation.

Here is the same dog as an adult. He is standing beside his mother, who doesn’t have that somatic mutation. Because this is a mutation in the somatic cells, it is not passed on from generation to generation. Breeding a dog with these spots to another dog will not produce spotted puppies.

(Source for the image)


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