Experiment
Genetic loci associated with long bone length, necropsy body weight, and organ weight were mapped in 1045 animals from a (LG/J x SM/J)F2 intercross. Animals were phenotyped between 70 and 237 days of age, with an average age at sacrifice of 144 days. Twodifferent sets of F2 mice were genotyped for 75 and 96 polymorphic markers across 19 autosomes. 97 single trait QTL were identified. After pleiotropy analysis the 97 loci coalesced into 35 pleiotropic QTLs. Cutoff for statistical significance is LPR=3.49but all pleiotropic loci listed in the reference are reported here.
On mouse Chromosome 5, linkage to humerus length in males mapped to 78 cM near D5Mit32 (LPR=2.6). This locus is named Lbn4 (long bones 4). The confidence interval spans 90 cM - 130 cM. Potential candidate genes mapping near Lbn4 include Tbx5 (65 cM), Dtx2, Fzd9 (75 cM), Fzd10, Zfp11, Eln (75 cM), Epo (78 cM), Fbxo24, and Taf6.