Distribution of DG markers along the chromosomes of sorghum. A heat map display of the distribution of (A.) predicted genes; (B.) FseI sites identified in silico; and (C.) FseI sites identified by sequencing along the ten sorghum chromosomes. For each 2 Mbp interval, values were determined as a percent of the total number of predicted genes or FseI sites. For FseI sites identified by sequencing, percentages were calculated based on the total number of in silico sequences.