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Figure 4 | BMC Evolutionary Biology

Figure 4

From: Complete chloroplast genome sequence of a tree fern Alsophila spinulosa: insights into evolutionary changes in fern chloroplast genomes

Figure 4

Comparisons of the gene order of Alsophila spinulosa cp genome with other ferns. Comparison by using online zPicture software[44]. Points along the positive slope are in the same orientation in both genomes, whereas points along the negative slope indicate sequences that are oriented in opposite directions. A, the two groups of points that fall along the negative slope in the upper right corner represent the sequences of IRs. B and C, ellipses denote the complex rearrangements in IRs and arrows indicate the gene order change between rpoB and psbZ.

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