Breeding Black to White - German Shepherd Dog Forums
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post #1 of 67 (permalink) Old 01-17-2008, 01:30 PM Thread Starter
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Breeding Black to White

Today I ran into a man at the store that my fiance' purchased a dog from in the past. He owns 2 wgsds (who by the way, are not titled in any way, nor have they had any certifications of any kind done that I'm aware of). Anyway, he was asking how I was doing, and if I still have shepherds...and proceeded in telling me that he has a friend who has a black female and is wanting to breed her with his white male! I may be wrong...but that seems so wrong to me! What type of puppies would that even bring?? I don't know anything about genetics, or breeding even, but I don't think I've ever heard of anyone breeding a white to a black, and I figured there must be a reason for that. What should he expect from such a pairing? I just felt like I should warn him against it, but unfortunately didn't have any facts to help argue my case. What color would he expect to see (if he went through with it) and would there be a greater risk for genetic disease to be carried out? I just thought some of you could give me information to pass on to him that would maybe make him change his mind.

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post #2 of 67 (permalink) Old 01-17-2008, 01:35 PM
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Re: Breeding Black to White

i've wondered this myself... wgsd x bgsd = ? would b&w sables be a possibility?

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post #3 of 67 (permalink) Old 01-17-2008, 01:36 PM
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Re: Breeding Black to White

being black is recessive, unless the white dog carried black, no blacks. White is a masking gene, so you'd have to know what the parents of the white dog looked like since the white dogs colors are "hidden" so to speak.

You get sables only if you have a sable parent.

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post #4 of 67 (permalink) Old 01-17-2008, 01:37 PM
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Re: Breeding Black to White

Nah. I think just a bunch of solid black and white puppies.
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post #5 of 67 (permalink) Old 01-17-2008, 01:41 PM
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Re: Breeding Black to White

I am not a breeder and don't know much about genetics, so breeders correct me if I'm wrong on this:

Color doesn't have anything to do with whether or not a GSD carries genetic diseases. Also, white is a masking gene, so you'd have to know what color the white GSD would be without the masking gene. It's not as simple as putting black and white together and getting a black and white dog. If the black GSD carries the masking gene, it's possible to have white puppies. If not, you can end up with any variations of colors depending on what genes the parents carry. Black, sable, black and tan, etc. I have never heard of black and white sables. There are silver sables, which may be what you're thinking of? Yes those would be possible if the parents carry sable genes, but remember, white and silver are not separate colors, they are just diluted or masked tans and browns.

I think anyways.

Also, I have heard of black and white GSDs being bred to each other before, it's not extremely rare.

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post #6 of 67 (permalink) Old 01-17-2008, 01:45 PM
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Re: Breeding Black to White

Again, genetics. Black is recessive.

So you have:

Black dog---- recessive to everything


White dog--- who knows what color since it's masked.

White dog could be sable, could be black and tan. Whatever color it is under the white masking gene, is prob. what the pups would look like. Easier way to find out is to know what color the parents of the white dog are.

But the likelihood of getting black and white puppies?? Really now.

Angela

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post #7 of 67 (permalink) Old 01-17-2008, 01:48 PM Thread Starter
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Re: Breeding Black to White

I didn't talk to him long enough to get any information about the black dogs pedigree (as far as color goes) but I do know that his white dog is from a LONG line of all whites. I just had never heard of anyone breeding those colors together before, so it had me wondering what would come of it if he did.

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post #8 of 67 (permalink) Old 01-17-2008, 01:53 PM
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Re: Breeding Black to White

Angela, so since black is recessive that means even if the dog had the white masking gene they wouldn't produce whites? Or is it even possible, since he's black? I guess since he's black it means he doesn't carry white, otherwise he'd be white?

Sorry! Trying to learn.

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post #9 of 67 (permalink) Old 01-17-2008, 02:00 PM
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Re: Breeding Black to White

White masking gene is recessive, however it is located on a separate locus from the gene for general color. A white dog is genetically a regular colored GSD... could be black, sable, black & tan or bi-color. But, as the white masking gene causes the entire dog to BE white, we don't know what color that white dog carries, or would be if it didn't have the white masking gene. That's why knowing the color of the white dog's parents would be helpful.

Black is recessive to all other colors. So a black dog cannot carry genes for sable, black & tan or bi-color. It can carry the white masking gene. If it carries 2 copies of the white masking gene, it would BE white.

So White bred to black could produce any colored GSD. Without knowing what colors the white dog carries it is impossible to know what. If the black dog does not carry a copy of the white masking gene, which it probably doesn't, white puppies are impossible. If the black dog does carry a copy of the white masking gene, than statistically 50% of the litter would be white and 50% of the litter would be colored. What colors, again there is no way to say.

But no, there will not be any black & white puppies. The genes don't work that way.


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post #10 of 67 (permalink) Old 01-17-2008, 02:00 PM
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Re: Breeding Black to White

White is a masking gene so covers up what the true color of the dog is, BUT it is also recessive to color. So a dog must carry two genes for white to be white. If the black dog carries white there could be white puppies. Otherwise all the pups will be colored. The color will depend on what is being masked by the white. The resulting pups could be a whole range of regular colors. Make sense?

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