Summary of genic conservation from putative homeologous BACs in soybean. Duplicate genes from six soybean BACs (3 different pairs) show the range of gene conservation found in the soybean genome. Each block-arrow represents a predicted gene structure. Black arrows are genes with no homeolog. Colored arrows are genes with a homeolog. A heat map for percent nucleotide identity shows the average nucleotide identity between duplicate genes for each conserved homeolog. Gray boxes between structures show homoelogous relationships. All gene structure predictions are available online . The first BAC pair has been reprinted with permission from The Plant Genome .