The dS, dN and dN/dS of chloroplast protein-coding gene groups between <i>Gossypium</i> and <i>Arabidopsis.</i>

Note: Synonymous and nonsynonymous nucleotide substitution rates were estimated according to [69]. Gene group and number of genes were according to Table S1. The data represents mean ± standard error.注：同义核苷酸替换率与非同义核苷酸替换率均依据文献[69]估算得到。基因分组及基因数目依据补充表S1（Table S1）确定。数据以平均值±标准误表示。