THE ULTIMATE GUIDE TO DOGS

Mitochondrial DNA signifies that almost all modern day dogs fall into a single of four monophyletic haplogroups which might be named haplogroups A, B, C, and D. Virtually all dogs slide within haplogroup A. The mDNA "molecular clock" signifies that 22,800 YBP the first genetic divergence (split) happened in haplogroup A, resulting in the lineages A