Mean gene expression levels for the major genes in the melanin pathway. The insect melanin pathway, inferred from work in D. melanogaster pathway , shows the major enzymes involved in insect melanization. Molecules in this pathway imparting final color differences are indicated with their respective colors. Asterisks indicate stages or pairwise comparisons with significant differential expression in the charts and enzymes with differential expression in the pathway. Y-axis gene expression is in log2 microarray intensities. Abbreviations and other style follows Figure 4.