Fig. 3.
The relationships between gene modules and phenotypic traits in the testis of mature sheep. The y-axis shows the 15 gene modules constructed by weighted gene co-expression network analysis (WGCNA). The x-axis shows the phenotypic traits: P1 indicates testis weight (g); P2 indicates sperm number per testis; P3 indicates diameter of seminiferous tubule; P4 indicates volume of seminiferous epithelium (x 1012 μm3); P5 indicates change of scrotal circumference; P6 indicates apoptotic germ cells/tubule. In each cell of the table, the upper value shows the coefficient of correlation (r) between gene module and phenotypic trait, while the lower value indicates the statistical probability. Red to blue colouration of the cells indicates the transition from positive to negative correlation, as indicated by the colour bar