Figure 1. Bar diagram showing distribution of nucleotide variations in different mitochondrial genes in PCG. Abbrevations: ND1- NADH dehydrogenase subunit 1; ND2- NADH dehydrogenase subunit 2; ND3- NADH dehydrogenase subunit 3; ND4- NADH dehydrogenase subunit 4; ND4L- NADH dehydrogenase subunit 4L; ND5- NADH dehydrogenase subunit 5; CO1- cytochrome c oxidase I; CO2- cytochrome c oxidase II; CO3- cytochrome c oxidase III; ATPase6- ATP synthase subunit a (F-ATPase protein 6); ATPase8- ATP synthase protein 8; CYB- cytochrome B; tRNA- transfer ribo nucleic acid; rRNA- ribosomal ribonucleic acid.