‘Wolf DNA’ Lurks in Many Modern Dog Breeds

At the whole genome level, canines and wolves are clearly separated. However, when the research team constructed phylogenetic trees for each of the 1,582 genes, they found that not a single gene supported the monophyly of dogs. Further examination of the mitochondrial DNA and Y-chromosome phylogenetic trees revealed a complex interplay between canine and wolf lineages. This discrepancy is evidence of multiple rounds of gene transfer in the past.

Imprints on Physique and Personality

The researchers found…