A correspondence is an assertion that two markers from one or more maps are the same.
The equivalences are established based on marker-name identities or in silico analysis. The majority of the relationships are derived strictly from marker-name indentities, as is the case for all of the non-rice links.
The sequence comparisons were performed for Cornell and JRGP genetic markers. This analysis identified equivalent markers not only between, but also within each of the maps. Viewing the Cornell and JRGP chromosome 7 maps gives a good example. The JRGP markers C11393s and E10074s have a line connecting them because they share a 185bp region with 99% identity. Meanwhile, the RZ886 Cornell marker is 100% identical over a 379bp region to JRGP's S11250 marker.
For more information on the marker-marker relationships, please see the documentation for "Establishing marker-marker correspondences".
The Fingerprint Contigs (FPC) map for rice has been constructed by the CUGI group, and genetic markers have been positioned onto individual BACs by hybridization to high density BAC filters. Correspondences to the genetic maps are based on marker name identities. While the FPC data is very valuable, it is important to keep in mind that interpretation of the hybridization signals from the BAC filters and the generation of BAC clones clusters (contigs) is inherently error-prone at this stage of the rice seqeuncing project.
In addition to the marker relationships, the FPC map is a way to navigate from plant genetic maps into the Rice genome. When viewing any one contig together with a genetic map, small vertical lines appear alongside the contig. These represent sequenced rice clones that have been placed on the FPC map by CUGI using simulated digest. These lines link directly into the corresponding clones in the Genome Viewer.
For more information on the Rice FPC map please go to CUGI Physical Maps (FPC Contigs).