A. Meiotic linkage map of the erd interval on canine chromosome 27 (CFA27) established by multipoint linkage analysis. The erd locus lies in a 4.6 cM zero recombination interval between microsatellite FH2407 and a gene specific polymorphism in SHARP1. The gene specific polymorphism in PTHLH co-segregates with FH2407.
B. Radiation hybrid map of the corresponding interval. Marker order is in agreement with the linkage map (A) for markers mapped both ways. The erd interval corresponds to the region between PTHLH and SHARP1, a distance of 1.5 cR3000.