THE SINGLE BEST STRATEGY TO USE FOR AMERICAN BULLY

Mitochondrial DNA suggests that almost all modern-day dogs drop into one of 4 monophyletic haplogroups that are named haplogroups A, B, C, and D. Nearly all of dogs slide within haplogroup A. The mDNA "molecular clock" suggests that 22,800 YBP the very first genetic divergence (break up) occurred in haplogroup A, leading to the lineages A1b and A2.