A low resolution canine marker map is an important tool in the further adva
ncements in genetic analysis of dog breeds and the control and reduction of
the frequency of inherited diseases. This study presents a genetic linkage
analysis with 39 linkage groups using 222 polymorphic canine markers based
of 129 Beagle and German on typing in the International DogMap reference f
amilies, consisting of 129 Beagle and German Shepherd dogs. Of these 39 lin
kage groups, 14 have been assigned to canine chromosomes by fluorescence in
-situ hybridization (FISH). These results are a further refinement on the f
irst linkage groups from the International DogMap collaboration and represe
nt a continuing collaboration.