Differentially Expressed Genes on Soybean Chromosomes. Genes identified as differentially expressed in the microarray experiment have been aligned on the 7X build of the soybean genome, assembled into chromosomes. Each horizontal line represents one gene; longer lines represent multiple genes. Lines to the left of the chromosome are genes in Clark; lines to the right of the chromosome are genes in IsoClark. Open boxes on the chromosomes represent previously identified iron QTL regions. Clusters of differentially expressed genes are apparent throughout the genome.