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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.
Research indicates that the majority of variation in coat growth pattern, length and curl can be attributed to mutations in four genes, the R-spondin-2 gene or RSPO2, the fibroblast growth factor-5 gene or FGF5, the keratin-71 gene or KRT71 [15] and the melanocortin 5 receptor gene (MC5R). The wild-type coat in dogs is short, double and straight.
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.
How Labrador Retriever Coat Color Works. ... In one set of genes, black is the dominant color, and only a dog with a double set of the recessive genes will be a chocolate brown Lab. The other set ...
By 1870 the name Labrador Retriever had become common in England. [8] The liver (now usually called chocolate) Labrador emerged in the late 1800s, with liver-coloured pups documented at the Buccleuch kennels in 1892; [ 9 ] the first yellow Labrador on record was born in 1899 (Ben of Hyde, kennels of Major C.J. Radclyffe). [ 10 ]
Daisy’s results from Ancestry Know Your Pet DNA came back with a mix of the expected German shepherd (66%) and Labrador retriever (26%), but also 8% Native American Indian Dog.
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