Supercontigs selected on the basis of their position on HSA1. The graphs represent the length (blue) and % (G+C) (red) of the chicken supercontigs and their position on the HSA1 chromosome assembly. In green: RH linkage group assignment of the supercontigs; LG: linkage group, ND: not done, NLG: new linkage group. A: position of all chicken supercontigs larger than 10 kb on HSA1 in the May 2004 Hg17 assembly. Supercontigs with a low % (G+C) were not selected for genotyping. B: position of the supercontigs genotyped in the RH panel on HSA1 in the March 2006 Hg18 assembly.