Figure 7.

Cartoon of relative lengths of cytochrome c oxidase subunit 1 (COX1) mitochondrial-encoded genes from triclads, parasitic flatworms, human, and fly. Blue bars show the location and length of the conserved COX1 domain. D. japonica, and D. ryukyuensis COX1 genes are represented as the longest possible ORF rather than the existing annotation as the start position is unknown. The cox1 gene labeled S. mediterranea represents both biotypes. Phylogenetic tree adapted from (Alvarez-Presas et al. 2008) and (Wägele and Bartholomaeus 2014).