Dog ancestry testing requires three key components:
1) A good set of DNA markers that can distinguish between different breeds
2) A large database of breeds to look for in your dog
3) A good computer program to analyze the DNA data for the different breeds
Mars Veterinary spent years analyzing dog DNA to identify the most useful DNA SNP markers to distinguish between different dog breeds.
Using that set of markers and a large number of DNA samples from each breed, the researchers have developed signatures, or patterns, that are specific to each breed. To date, the Mars Veterinary database of breed signatures is the largest in the world covering over 200 different breeds and it is expanded each year. For some breeds, we have taken it even one step further and developed signatures that can identify different subtypes and varieties within the same breed, for example show lines versus field lines of Labrador Retrievers or Miniature Shorthair Dachshunds versus Standard Wirehair Dachshunds. With such a large breed database you will get the most accurate results.
The final step in the process is having a computer program that is able to analyze your dog’s data against this database of breeds signatures and determine which breed ancestors came together to create your dog.
So breed count matters for accurate results.