Graphic representation of the alignment, position, and polarity of all predicted genes within the selected chromosomal intervals of maize, sorghum, and rice. The relative positions of all predicted and known genes of the orthologous regions, defined by the six genetic markers highlighted under the bottom interval in red, are graphically presented. Each interval is drawn as a horizontal bar with the gene polarity indicated by an arrow. The origin of each region is labeled to the left of the bar. The physical length of each interval and other properties are reported in Table 1. Predicted and known genes are numbered from the left to the right for each interval. Duplicated genes are given the same number but ordered by a, b, c,.... Gene numbers with an * indicate gene remnants. Conservation of genes between different intervals is indicated by vertical connecting lines. A key is provided as an inset to show the conserved genes (collinear genes), and also the noncollinear genes, genes in flanking regions, and gene remnants. (A) An alignment of regions containing the zmfie1/2 and orp1/2 genes and their orthologs in sorghum and rice. (B) The r1/b1 genes and their orthologs. (C) The c1/pl1 genes and their orthologs. (D) The tb1/2 genes and their orthologs. (E) The tbp1/2 genes and their orthologs.
