Figure 2. Hierarchical clustering of genes with highly significant differential expression between the five well-defined stages prior to, during and after metamorphosis in S. verreauxi (red = up-regulated, blue = down-regulated).

A distinct pattern is observed where groups of genes are clustered together in each stage with high overlap between the two metamorphosing larval stages. The horizontal clustering is based on expression pattern across all samples. The ten samples are shown on the vertical axis, where the duplicate samples of each stage cluster tightly together. Photographs were taken by Dr Quinn P. Fitzgibbon and processed by Dr Tomer Ventura.