Chez Charles/ biblio/ The main features of the craniate mitochondrial DNA between the ND1 and the COI genes were established in the common ancestor with the lancelet.

Mol Biol Evol. 1997 Aug;14(8):807-13 doi:10.1093/oxfordjournals.molbev.a025821

Delarbre C, Barriel V, Tillier S, Janvier P, Gachelin G.

The main features of the craniate mitochondrial DNA between the ND1 and the COI genes were established in the common ancestor with the lancelet.

Proposes AGR -> Gly based on AGG / GGG polymorphisms in the population.