Fig. 2

(a) Sample clustering tree; (b) Scale-free soft threshold distribution. The higher the square of the correlation coefficient, the closer the network is to the distribution without network scale; (c) Module merging. Genes are divided into various modules through hierarchical clustering. Different colors represent different modules. Gray is the default gene that cannot be classified into any module; (d) Heat map of module and trait correlation. Red in the figure represents positive correlation, green represents negative correlation, and the color depth represents the degree of correlation.