Mitochondrial DNA signifies that nearly all fashionable dogs drop into 1 of 4 monophyletic haplogroups which can be named haplogroups A, B, C, and D. The vast majority of dogs tumble inside of haplogroup A. The mDNA "molecular clock" implies that 22,800 YBP the very first genetic divergence (break up) occurred in haplogroup A, leading to the lineag