The merle gene has existed in the record of ADBA registered puppies, but breeders who made use of the puppies for their historic ‘genetic task’, identified there have been genetic flaws with dogs which have this color sample. These puppies were culled, and not utilised as breeding inventory. The http://riverjeyrj.thezenweb.com/Helping-The-others-Realize-The-Advantages-Of-merle-pitbull-35508479