Interesting on that particular DNA test.
I can tell you biewers were tested using the test developed by MARS.
The Wisdom Panelâ„¢ MX Mixed Breed Analysis test answers 'What's My Dog?'
Kathy785 had her biewer tested and one time posted the results...I don't remember any percentage given...it include yorkie, maltese, and an unknown marker. Interesting side note....not all the dogs tested had identical genetic markers.
I have been told the test itself identifies back thru 8 generations.