[4][5] In 2010, a study looked at 48,000 Single
nucleotide polymorphisms that
gave a genome - wide coverage of 912 dogs representing 85 breeds.
In 2012, a study looked at 49,000 Single
nucleotide polymorphisms that
gave a genome - wide coverage of 1,375 dogs representing 35 breeds, 19 wolves, and previous published genetic signatures of other breeds,
giving a total of 121 breeds covered.