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Originally Posted by wayne2075  Hi, there are some questions arising about how plastic or rubber may have caused the mutation to Chocolate. I have studied how mutations are caused. A mutation can be caused from 2 types of radation, or chemical or virus. I know my yorkies were not exposed to radation. I am not sure if this reaction to plastic or rubber in the artifical breeding is the cause only could be. I also know my yorkies do not have ressive genes for chocolate. When I first saw the puppies I was both shocked and dumfounded to see the Chocolate color. Why would both puppies born be chocolate unless this is a true mutation caused by something and not passed down? My yorkies do not have any chocolate in their history and not inbred. Inbreeding might cause defects as the chocolate color and many other undiserable traits. If you question my opinions on this being a mutation, please give me some scientific info that I can research. A photo of Misty the female that had the chocolate puppies is attached. She has 9 champions in her pedigree of the Rothby line. She is now 7 years old. wayne |
Never say never, most folks who produce off colored pups, never thought their dogs carried recessive genes too. :-)
Maybe some of the chocolate breeders who are more familiar with the chocolate bloodlines, can find a link to where the gene may have come from in your pedigrees? I think that may be the easiest way to start researching?
Please e-mail me privately and I'll be happy to give you a few names to start with.