edit Wiston Cap (b. I dont think many people really stop and think about where certain traits have come from or where they might be going or consider the risks they may be taking. Both the dilute and choc genes are recessive so two copies of each of the genes must be present in a dogs genetic makeup in order for a choc base colour to be diluted. This style of Border Collie has become popular in winning show kennels around the world, as well as among prestigious judges. Set of 4 x Picture Placemats in Gift Box - A Beautiful Table Gift Idea. The sable pattern can act on any base colour.e. Double merle - MM (homozygous merle). Pictured below is Lizz (Qualified to Comebye of Pinewood Country) owned and loved by Danielle Boushouwers of Nice of you to Comebye kennels in Holland. This is Wren, Bryning Goldfinch (Rico's litter sister here are some pics of her as she was growing up showing how the seal colour develops (Thanks to Joy and Becca for the slideshow) This is by no means an exhaustive list of all the possible.
Border, collie - Wikipedia
Border collie blue merle
The Intelligence of Dogs: A Guide To The Thoughts, Emotions, And Inner Lives Of Our Canine Companions. There is also an added danger herethe merle gene cannot be expressed on a true red dog (remember merle acts on eumelanin to) so it is possible that when red puppies are born from a merle parent they may well be merles but you simply. E is the recessive form and allows the extension of phaeomelanin but prevents the extension of eumelanin, so there is no eumelanin in the pigment and therefore the animal is red. A slate tricolour merle dog has two copies of both the dilute and tricolour genes and one of merle. Border Collies come in an array of coat colors and mixtures. Because the sable gene affects the extension of eumelanin (similar in effect to the extension gene) in it's extreme (clear sable) merling will not be visible, as such merle to sable matings are generally not a good idea. The dilute gene is also recessive so two copies of the gene must be present in a dogs genetic makeup in order for its base colour to be diluted. As such you can get black, chocolate, blue and lilac dogs that all appear as red because of the lack of eumelanin in the hair follicles.
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Same as blue tricolour but with the merle gene also present.
A slate tricolour merle dog has two copies of both the dilute and tricolour genes and one.