Nuclear matches of mitochondrial genes. Striped rectangle represents the nucleotide sequence of the mitochondrial gene. Dark rectangles above and below the sequence represent high-similarity nuclear matches on the plus and minus strands, respectively. (Top) Cytochrome c oxidase subunit 1; (bottom) NADH dehydrogenase subunit 1. Display was adopted from ENSEMBL (Hubbard et al. 2005).