Fig. 1.—

Structure of mitochondrial nad1 and matR genes of Geraniales. Mitochondrial nad1 gene sequences and fragmented copies are represented by open boxes. Homologous intergenic regions are shown by a single line. Non-homologous regions are indicated by grey arrows. Introns in cis and trans configurations are represented by full and broken ellipses, respectively; a black color indicates the presence of the maturase gene matR. Filled black and grey dots indicate the presence and absence of RNA edit sites in Geraniales, respectively.