Figure 2

Metacrangonyctidae mitochondrial nucleotide composition. Box plots showing values of nucleotide composition (A + T percentage) (a), AT-skew (b) and GC-skew (c) across mitogenomes (indicated as complete), for ribosomal (rRNA), transfer ribosomal (tRNA) and across protein coding genes (PCGs) as boxes filled in black. The same features are shown for each protein-coding gene and pooling by codon position and coding strand. Grey-filled boxes indicate genes coded at the (-) strand and empty boxes in the (+) strand.