Figure 2
Conservation between diploid and allotetraploid cotton. (A) The red or white boxes stand for the ratio of orthologous gene pairs between each chromosome from G. arboreum (chr1-chr13) and G. hirsutum (A01-A13). (B) A comparison of H3K4me3, gene expression and orthologue between each pair of chromosomes. Data are displayed with circos software using four layers: the outer circle stands for the A09 (red) and chr11 (blue) chromosome, the second circle stands for H3K4me3 modification peak distribution along A09 (orange) and chr11 (blue), the third circle stands for gene expression density (high expression indicated by a dark colour) among A09 (pink) and chr11 (green), and the curves of the inner layer link orthologous genes in the two chromosomes.
