Figure 1.
Evolutionary relationships of the dog. (A) The evolutionary relationships of carnivores based on DNA hybridization data. (Wayne et al. 1989). (B) A neighbor-joining tree of canids based on 2001 bp of mitochondrial DNA sequence (cytochrome b, cytochrome c oxidaes I, and cytochrome c oxidase II) (Wayne et al. 1997a). (C) A neighbor-joining tree of wolf (W) and dog (D) haplotypes based on 261 bp of control region I sequences (Vila et al. 1997). Dog haplotypes are grouped in four sequence clades, numbered I to IV.
