![]() This masking results in a yellow coat, rather than a black or chocolate coat. The little e gene is recessive and masks the B gene. The big E gene is dominant and does not interfere with the B genes. E genes will determine if the B genes are expressed or not. Just like the B genes, there are two genes at this locus, one from each parent. Yellow Lab coats are determined by the E gene. A Lab with BB or Bb will have a black coat while a dog with bb in their genome will have a chocolate coat. The little b, the recessive gene, codes for low amounts of eumelanin and results in a chocolate coat.ĭogs inherit two B genes, one from each parent. ![]() The big B, the dominant gene, codes for high amounts of eumelanin and results in a black coat. Whether a dog produces a lot or a little eumelanin all depends on their B genes. A dog that produces lots of eumelanin will end up a black dog, while a dog that produces small amounts of eumelanin will be chocolate. Eumelanin determines what shade their coat will be. The science behind coat color is complicated and a result of various genes.īlack and chocolate Labs have a pigment in their fur called eumelanin. However, as Labs have risen in popularity, other colors such as silver, charcoal and red have become recognized too. ![]() These colors are black, yellow and chocolate. According to the American Kennel Club, there are only three colors of Labrador Retriever.
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