Reference mitochondrial genome sequence (NC_012920.1) highlighting the positions of ND1, ND4 and ND6 genes in yellow. Also shown are the positions of the G3460A, G11778A and T14484C mutations (arrows) and the positions of the forward and reverse primers used in the study (red). The sequence was retrieved from NCBI and presented using BioEdit. To access the data, click or select the words “Appendix 1.”