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by Jenni78 on 19 June 2009 - 16:06
Doesn't anyone w/the opinion that they will gain color want to answer me as to HOW OLD BEFORE YOU AGREE THEY ARE TRULY SOLID BLACK W/NO MARKINGS? I'm curious..............please???
by SchHBabe on 20 June 2009 - 05:06
To prove the genotype of a "black" dog is best demonstrated in its progeny. "True black" dogs can only pass on the black recessive gene.
Daryl uses the term "black sable" to refer to a dog that has a sable phenotype but carries the black recessive gene. Other folks refer to "black sable" as a melanstic sable, which may or may not carry the black recessive.
Neither of these points have anything to do with white hairs. The white coat, in and of itself, is a masking gene which although is recessvie (like black) does not act in the same way, which is why I limited my article to the "usual" color variations - beyond that it gets more complicated.
A true black dog may or may not have white hairs. I have seen sables and B&T's have white hairs, some even a considerable chest patch, which had nothing to do with the pigment of their offspring.
Yvette
by Mike D on 20 June 2009 - 07:06
I enjoyed your article in USA and referred to it a couple of times. I'm glad they printed it. We just had our 1st litter from our male & female.
Male is Bi-color, female is sable. Results: (Warning: Read only if you have more than a passing interest in genetics) 1 sable, 4 bi-color & 1 black (at least so far...at 4.5 weeks). BTW...none of the grandparents are solid black. If these phenotypes hold true then I feel lucky to know the genotype of both my adult dogs,(Sable with the black recessive for my female & Bi-color with the black recessive for my male) and all their puppies except the sable (his recessive allele is still in question) .....as long as no tan hairs show up on the solid black! If that happens....its all out the window!
Mike
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