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Scatter plots comparing gene expression levels in pollen and at different sporophytic developmental stages. The expression levels of individual genes were normalized using a scale of 0 to 100. Genes co-expressed in pairs of transcriptome data sets were plotted. A, Pollen versus four leaf rosette stage, 2,906 genes compared; B, open cotyledon versus four leaf rosette stage, 2,617 genes compared; C, four leaf rosette versus first open flower stage, 2,629 genes compared.
