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According to Candille, et al. (2007), dog coat color can largely be explained by three genes: MC1R, Agouti and CBD103. When a dog has wild-type alleles at all three genes, it will have a yellow coat. When the dog has a loss-of-function allele at MC1R, it will have a yellow coat regardless of the genes it carries on the other two genes. Only a ...
The alleles at the K locus (the β-Defensin 103 gene or DEFB103) determine the coloring pattern of an animal's coat. [34] There are three known alleles that occur at the K locus: K B = Dominant black (black) k br = Brindle (black stripes added to tan areas) k y = Phaeomelanin permitted (pattern expressed as per alleles present at A and E loci)
A Labrador exhibiting a yellow coat colour. Domestic dogs exhibit diverse coat colours and patterns.In many mammals, different colour patterns are the result of the regulation of the Agouti gene, which can cause hair follicles to switch from making black or brown pigments to yellow or nearly white pigments.
There are some adult dog breeds that look completely different as puppies. From the Bergamasco to the Tibetian Terrier, these pups have appearances that change significantly as they grow up.
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Blue merle Border Collie puppy Red merle Australian Shepherd. Merle is a genetic pattern in a dog's coat and alleles of the PMEL gene. It results in different colors and patterns and can affect any coats. The allele creates mottled patches of color in a solid or piebald coat, blue or odd-colored eyes, and can affect skin pigment as well. Two ...
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Brindle coloring in horses is extremely rare and most commonly caused by pigment concentrating along Blaschko's lines during fetal development. In two confirmed cases it has been linked to spontaneous chimerism , resulting in an animal with two sets of DNA , with the brindle pattern being an expression of two different sets of equine coat color ...