Comparison of flanking regions of the PPR genes from the Rfo locus. Pairwise comparisons were made between the two genes of the L7rfo sequence and the three genes of the D81Rfo sequence using YASS with default settings. The genes (from initiation to stop codons) are represented as arrows along the sequence scales. Vertical and horizontal lines indicate gene borders on the dot plots. A: PPR-1 vs PPR-A; B: PPR-1 vs PPR-B; C: PPR-1 vs PPR-C; D: PPR-2 vs PPR-A; E: PPR-2 vs PPR-B; F: PPR-2 vs PPR-C.