Fig. 4

Analysis of non-synonymous (Ka) to synonymous (Ks) ratio. (A) nonsynonymous (Ka) and synonymous (Ks) divergence values for Ga–Ga, Ga-Gb, Ga-Gr, Ga-Gh, Gb-Gb, Gb-Gr, Gb-Gh, Gr-Gr, Gr-Gh and Gh-Gh are shown in circular chart. (B) Prediction number of duplicated gene pairs involved in different combinations from four cotton species