Nonlinear expression patterns and multiple shifts in gene network interactions underlie robust phenotypic change in Drosophila melanogaster selected for night sleep duration

Fig 4

Signal variances and covariances normalized to range [-1,1] for females and males in each of the selection schemes: Short, control, and long.

Each off-diagonal square is the expected value of the interaction between two of 85 genes, for a total of 3,570 pairs.