Fig. 3
From: Intergenomic gene transfer in diploid and allopolyploid Gossypium
Flanking nucleotide analysis of chloroplast-derived genes, trnH (a) and trnD (b), in mitogenomes. cpDNA and mtDNA are the abbreviations of chloroplast DNA and mitochondrial DNA. The light-dark-light gray strip represents the fusion sequence of mtDNA-cpDNA-mtDNA. The capital English letters in the long rectangular boxes, such as “GG” and “AT”, close to cpDNA show the nucleotides of micro-homologies among the different species. Dotted rectangles enclose flanking sequences for the four cotton species studied here