The DNA study done by AKC tested males and females were not DNA'd. The dogs used in the MARS testing focus group were mostly dogs with direct German ancestry and many of the dogs registered to other Biewer clubs are siblings to these dogs. The BTCA has had many people come to them from other US registries and ask if they can MARS test their dogs and go from the current registry to BTRA. Some have tested as Biewer Terriers and were allowed entry while others tested as Yorke/Biewer crosses and Yorkie/maltese. Some in fact came back as Yorkie/Shih-tzu mixes. The other US clubs have not tested their dogs therefore have not been able to remove these mixes from their breeding programs thus leading to these results. |