Figure 3

Network profile of the mtDNA control region haplotypes in Chinese domestic ducks and mallards. The links are labelled by the nucleotide positions to designate transitions; the single transversion at site 434 are further specified by adding suffix A. Recurrent mutations are underlined. The order of the mutations on a branch is arbitrary. The black colour denotes the wild mallards, while the white represents the domestic ducks. Circle area is proportional to haplotype frequency.