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Labrador Retrievers are a popular dog breed in many countries. There are three recognised colours, black, chocolate, and yellow, [1] that result from the interplay among genes that direct production and expression of two pigments, eumelanin (brown or black pigment) and pheomelanin (yellow to red pigment), in the fur and skin of the dog.
The gene at the B locus is known as tyrosinase related protein 1 (TYRP1). This gene affects the color of the eumelanin pigment produced, making it either black or brown. TYRP1 is an enzyme involved in the synthesis of eumela
In dogs, the Liver color is caused by dilution of the eumelanin (black) pigment by the B locus. The gene that causes Liver is recessive, so a BB or Bb dog has normal black pigment. Only a bb dog is Liver. There are several different recessive b genes, but they all turn the coat brown. They are only distinguishable through genetic testing. [2]
Sully, the Black Labrador, is already obsessed with visiting his grandma and grandpa, but he'll have an even harder time saying goodbye after the holidays now that he's met Tigger, his brand-new ...
Related: Black Lab Tastes Sparkling Water for the First Time and Doesn’t Hold His Feelings Back. Reasons Labs Make Great Service Dogs. Many dog breeds are excellent therapy dogs, ...
According to recent research, chocolate Labrador Retrievers have a significantly shorter lifespan than black and yellow Labradors. After analyzing the veterinary records of nearly 33,300 Labradors ...
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