Fig. 2
From: Intergenomic gene transfer in diploid and allopolyploid Gossypium
Length (bp) of nuclear-like transposable elements in mitochondrial genomes of four cotton species. The horizontal axis represents four cotton species. The vertical axis denotes the lengths of the nuclear-to-mitochondrial repeats including seven categories. The small rectangles in different shades of gray are symbols of seven kinds of repeats. The points in the line describe the total length of repeats in four cotton species. The bars and the lines refer to the left and the right coordinates, respectively. TE: transposable element that cannot be assigned to other detailed categories, mainly DNA transposable element; LTR-retro: long terminal repeats retrotransposons that cannot be assigned to either gypsy or copia classes