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I read the great article in the Brussels Griffon forum but I am having some difficulty understanding. Is Black and Tan recessive? Are the puppies from a Black and Tan parent that are not blk/tan carriers for the color?

Black and tan is dominant over black and codominant with red.

If a puppy that is not black and tan is born to two parents that are black and tan, it would be black and would not carry a black and tan gene.

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Last edited by Spot and Smudge on 5/11/2020 12:39:33 PM

AA- Black
AtA or AtAt- Black and tan
AyAy- Red
AyA or AyAt- Belge

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posted by Spot and Smudge
If a puppy is born to two parents that are black and tan, it would be black and would not carry a black and tan gene.

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This makes no sense to me. So breeding two blk/tan dogs does not make blk/tan pups?

How does belge effect it?

If it is a dominate gene then there are no blk/tan carriers. Is that what you meant?

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posted by Silver Ring Kennel

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posted by Spot and Smudge
If a puppy is born to two parents that are black and tan, it would be black and would not carry a black and tan gene.

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This makes no sense to me. So breeding two blk/tan dogs does not make blk/tan pups?

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I meant a puppy that is not black and tan, like she was asking about.

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posted by Silver Ring Kennel
If it is a dominate gene then there are no blk/tan carriers. Is that what you meant?

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No, it can be carried by belge, sort of. It's dominant over black. If you have one black qene and one black and tan gene, the dog is going to be black and tan.

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posted by Silver Ring Kennel
How does belge affect it?

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Does belge affect what? To get belge you have one red gene with either a black and tan gene or a black gene.

I'm sorry, I own both kennels lol. I am trying to bring more numbers and quality to blk/tan Brussels in Sweet Frog along with raising and showing English Setters. I was asking how blk/tan interacts with belge or is effected by it with that one question.

Belge isn't caused by its own gene. Belge is caused by combining the red gene with black and tan gene or a black gene.

I think your "beige" is actually a "sable" gene carried on the A Locus. A "double" sable (ay/ay) produces the red - a clear sable so to speak.

Ay is primarily dominant (or semi-dominant) to the other alleles in the series.

I'm not that familiar with the breed but this is my interpretation. When the sable is paired with one of the other alleles, either "a" (solid black) or "at" (tan points) the black "bleeds" through producing a sort of greying of the red, hence beige, and a shadow of the underlaying "pattern". I believe that your pictures are telling part of this story.

Thus a beige will carry black&tan (ay/at) or black (ay/a).

A red will carry only red (ay/ay).

A black will carry only black (a/a).

A black&tan may carry black as a recessive but not red.


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Last edited by gaylanstudio on 5/14/2020 11:52:46 PM