Fig. 6
From: Rapid evolutionary divergence of Gossypium barbadense and G. hirsutum mitochondrial genomes
The putative origin mechanism of rps3-2 and R2. a A structural comparison of rps3 and rps3-2 is shown in the top panel. Exons are depicted as black bars, introns as straight lines, and the striped box indicates the exonic sequence lost in rps3-2. Locations for each of the exons are given in parentheses b The lower panel illustrates the possible formation mechanism of rps3-2 and R2. A2: Chr. 5 represents chromosome 5 in the G. arboreum genome and MT represents mitochondrial genome of G. barbadense, with the top MT graph indicating the arrangement before transferring and the bottom indicating the arrangement after intracellular transferring. The red rectangle and red bar indicate the transferred sequences from the mitochondrial genome to the nuclear genome, respectively. The blue bar represents the flanking sequences transferred along with the latter half of exon 2, depicted again as a striped box. Included in these graphs are the bordering regions between rp3 and R2′ (28,235 bp) and between rps3-2 and R2 (26,936 bp)