The hierarchical clustering method clusters genes into clades with similar expression profiles. The three groups of genes below: Data S1, Data S2 and Data S3 are the genes that showed a significant increase in gene expression in one of three tissue groups: Seed, Aerial or Underground. Clicking on the small thumbnail switches between the three data sets. Within a given data set clicking on the preview window permits quick exploration of the hierarchical clustering dendrogram (tree graph). Finally, Clicking on a gene name will take the user to the gene in the soybase genome browser. If you prefer you can download this data and view it in pdf format.