Fig. 2
From: Genomic insights into positive selection during barley domestication
Correlations among substitution rates, gene features and codon usage bias between wild barley and landrace. Upper Right: the size of the circle represents the magnitude of the correlation coefficient, red indicates positive correlation, and blue indicates negative correlation. One asterisk (*), double asterisk (**) and triple asterisk (***) indicate 0.05, 0.01 and 0.001 significant difference level, respectively. Bottom Left: correlation coefficients are presented as Spearman’s rank correlation test ρ