Silver Labrador Retriever Weimaraner

The Truth Behind Silver Labradors

August 28, 2014 – 12:47 pm

Silver Lab versus the

The following is an article written by Sharon A. Wagner, a reputable Labrador Retriever breeder and Geneticist. Permission was granted by Ms. Wagner for this site to carry the article.

A dog's genetic makeup is very complex (like us) and many genes are involved in coat color. The same genes are all present in every dog however only certain ones get "turned on" like a switch and others are off depending on what breed or what goes into a puppy in the case of a mixed breed. A Labrador's coat color is dependent on many genes being turned on and off. The ones we commonly think of that dictate color in our breed are the B and E genes. Other genes like T for ticking is always turned off and still other genes like the A gene causes a dog's coat to be a solid color. We know that If a lab has BB or Bb then black is dominant and if it has bb then the dog is chocolate. However the E gene acts as a epistatic gene or "masking" gene; in other words if the dog has Ee or EE then the color is dependent on what is present at the B gene (BB, Bb, or bb) but if the dog has ee then it will always be yellow no matter what is present at the B gene. A yellow that has a dominant B gene (BB or Bb) will have typical black pigment on the nose, lips, and eyerims and a yellow that is homozygous recessive at the B gene (bb) will be a Dudley.

Now the silver coloration comes into play when the D gene is turned on. If the D gene is in it’s homozygous recessive form (dd) then it will "dilute" the coloration if the B gene. When chocolate is dilute the color is a silvery mousey brown and the dilute version of a black (Bb or BB) yields a dog that is dark slate gray or "blue". Weimeraners are a breed that is based on dilution. The typical Weim coat is a mousey gray and it’s because their D and B genes are both present in the homozygous recessive forms (dd and bb) so the typical Weim is a chocolate that is diluted. Weimeraners also can carry the B gene in the dominant form so therefore a darker blue Weim can pop up in litters when they are dd and BB. A breed like the Doberman also has this dilute gene pattern in it’s population...

Source: www.woodhavenlabs.com


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There is no such thing as a Silver Lab.

Non-variants
Terms such as "golden", "silver", "blue", "white" or "grey" as variants are not recognised. The term "Golden Labrador" has been used both as an incorrect term for yellow labradors of a golden shade,[26] and also for any Labrador-Golden Retriever crossbreed of any colour, including black.[27] White is a light shade of yellow (officially referred to as 'light cream' or 'pale yellow' in the standard),[10][28][29] and silver is either not recognised or registered as chocolate (though regarded as a major fault and not up to confirmation).[20][10] Claims that some "rare" variants exist or have been verified by DNA testing, or the like, are widely considered to be a 'scam'.[10][30]

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