Figure 1
From: Ancient DNA provides new insight into the maternal lineages and domestication of Chinese donkeys
Neighbor joining tree constructed from the mtDNA D-loop sequences of the ancient Chinese donkeys and horses. The GenBank sequence X97337 was included as a reference sequence in the tree. Five African wild ass sequences were also added, including two Nubian wild asses (E. a. africanus) (HM622632 and HM622636), and three Somali wild asses (E. a. somaliensis) (HM622661, HM622663, and HM622669). The six Asiatic wild ass sequences were AF220932-AF220937, of which AF220932 and AF220933 belong to the species E. kiang, AF220934-AF220936 belong to the species E. hemionus kulan, and AF220937 belongs to the species E. hemionus onager.