BMC Genomics 2006, 7:283 http://www.biomedcentral.com/1471-2164/7/283 BFoigvuGreen2RH map of BTA 4 compared with the corresponding MARC 2004 linkage map BovGen RH map of BTA 4 compared with the corresponding MARC 2004 linkage map. Red dashes represent cor- responding marker positions, black dashes non-corresponding positions. Lines between the maps connect markers common in both maps. For an improved legibility only marker names common in both maps are displayed. Distances on the BovGen RH map are scaled in cR, on the MARC 2004 map in centimorgan (cM). Page 6 of 15 (page number not for citation purposes)