Linearized representation of the mitochondrial gene arrangement for representatives of major chromadorean nematode clades, including two newly determined species (B. xylophilus and P. vulnus) in this study. Gene and genome size are not to scale. All genes are transcribed in the same direction (from left to right). The tRNAs are designated by single-letter abbreviation and two leucine and two serine tRNA genes are labeled, according to their anticodon sequence, as L1 (trnL-uag), L2 (trnL-uaa), S1 (trnS-ucu), and S2 (trnS-uga), respectively. The AT-rich non-coding region (NCR) is not indicated. The rectangular box indicates the most common gene arrangement pattern shared among the majority of Rhabditomorpha-Ascaridomorpha members.
Sultana et al. BMC Evolutionary Biology 2013 13:12 doi:10.1186/1471-2148-13-12