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by SchHBabe on 06 March 2009 - 21:03
Anybody happen to know if Zidane is a homozygous sable (Aw + Aw) or if not, what other coat color gene he carries?
Looking through his numerous sons and daughters with pictures on this PDB all are sable, but this does not necessarily mean that Zidane is homozygous, as many of his progeny are not pictured.
I have a Zidane son that was bred to a sable female carrying the bi-color gene (Aw + At) and I was just trying to figure out what genes he might have inherited from his sire.
Thanks!
Yvette
by eichenluft on 06 March 2009 - 21:03
yes,. he is sable/sable homozygous sable. Produces gorgeous red, too. The color recessive of your Zidane son will depend on the color of his dam.
molly
molly
by Pat Relton on 06 March 2009 - 22:03
homo what?

by Q Man on 06 March 2009 - 23:03
Yes...

by SchHBabe on 07 March 2009 - 00:03
Thanks, Molly! If a homozygous male (Aw + Aw) is bred to a sable female carrying Bi-Color (Aw + At) then I've got a 50/50 chance that my dog is either homozygous sable or sable carrying the Bi-Color. Only time will tell...

by SchHBabe on 07 March 2009 - 00:03
Pat, homozygous means that he has two copies of the sable coat color gene. A sable colored dog could be homozygous, or carry Black & Tan, or carry Bi-Color, or carry Black. All four such dogs would appear to have a sable coat.
by eichenluft on 07 March 2009 - 01:03
here's a hint - perhaps. If your sable dog has black toes, tarheels - he either carries bicolor or black. If no black toes/heels - he does not carry bicolor or black - no black on toes means he is either sable/sable or sable/blacktan. Keeping in mind that (IMO) bicolor is not a separate color in itself, but a melanistic "tag" attached to the black/tan color gene. So black/tan dogs can carry bicolor AND black, or they may not carry bicolor. Bicolor dogs may carry black, or black/tan/black/tan, or black/tan/bicolor. If his dam was sable that produced bicolors when bred to black - chances are that she did indeed carry blacktan with bicolor tag. If she produces bis when bred to sable/black tan (known no bicolor tag) then same. But bicolor could be coming from the sire, if she was bred to a black/tan or sable/black tan. If you breed your dog to a bicolor female, yes there will be bicolor pups as well as sables if your dog has a black/tan gene. If he is sable/sable, then all pups will be sable.
molly
molly

by SchHBabe on 07 March 2009 - 01:03
Interesting, Molly. Have you read Malcolm Willis' book on GSD's, The Genetic History of the Breed, or some such? He has a section on heritability of color, not just the standard colors but also the dilution series. Bi-Color is distinct from B&T and are referred to by two separate genes, At and As. I believe I also read this in Fred Lanting's book The Total German Shepherd Dog.

by SchHBabe on 07 March 2009 - 01:03
My dog's dam was previously bred to a sable male that carried the black recessive gene. She produced at least one bi-colored pup, and I do make a distinction between melansitic (dark) B&T and bi-color. This pup was completely black except for the tan on the legs. A Sable male carrying black cannot produce a bi-colored pup unless the dam carries it. I have a color inheritance chart that I put together based on the genetics. Let me know if you'd be interested to see it.

by Slamdunc on 07 March 2009 - 02:03
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