Fig. 10. A. Three types of sequences of region between nucleotide sites 40 and 117 of psbA-trnH intergenic spacer (Fig. 1; also see text). Lines and arrows below sequences indicate inverted repeats. Nucleotides (bold letters) that are bordered by inverted repeats have undergone inversions. B. a. Type I sequence containing another short inverted repeats between the long inverted repeats; b. The stem-loop structure of type I sequence; c. Stem-loop structure of type III (i) sequence.