Quote:
   | 
					Originally Posted by wildcard  I think it is more likely that the the gene that causes parti color in yorkies (whether it happened in the development of the YT or more recently) is from a breed or precursor to a breed where you regularly see piebald as a coat pattern.  This is an interesting article on the various alleles involved in coat color genetics.  Coat Color Genetics 
I am not sure why adding in a maltese here or there would cause parti color... | 
 
  Golden Parti and Pinehaven are much more knowledgable about the genetics than I am, but there were other terriers that were spotted that were in the mix also.