Fig. 1From: Origin and higher-level diversification of acariform mites – evidence from nuclear ribosomal genes, extensive taxon sampling, and secondary structure alignmentNucleotide composition. a- Tetrahedric graph showing nucleotide composition of loop (red), stem (blue), and regions of ambiguous alignment (RAAs, yellow) of rDNA. b- Nucleotide composition (CG content) plotted against the sequence length for the entire rDNA alignment and the three partitions; regression line is given for each graphBack to article page