cMap: the comparative genetic map viewer

cMap, a www comparative genetic map graphical utility, has a search capability and provides comparison of two genetic maps within or between species with dynamic links to data resources and text lists of the shared loci, running in a relational database environment. Currently, maps from three species (maize 'Zea mays U, rice 'Oryza sativa U, and sorghum 'Sorghum bicolor L.'), representing over 13800 distinct loci, are available for comparison at http://www.agron.missouri.edu/cMapDB/cMap.html.