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2 downloadsOculoskeletal dysplasia • Canine genetics research at the Animal Health Trust • Basic genetics • Finding disease mutations • Genetics of OSD – Part 1 – Identifying the causal mutation • Genetics of OSD – Part 2 – Implications for the breed • Summary and Breeding Advice • Acknowledgements • OSD3 DNA Test Breeds information/impacts... - the drd1 mutation in the gene COL9A3 in the Labrador retriever - the drd2 mutation in the gene COL9A2 in the Samoyed - autosomal recessive mode of inheritance of the complete phenotype • Clinical findings in the Labrador retriever & in the Samoyed (Carrig et al. 1988 & Goldstein et al. 2010) - disproportionate dwarfism - corneal opacities, cataracts, persistent hyaloid artery remnants, vitreal dysplasia, alterations in optic nerve head colour + size, retinal dysplasia retinal detachment • Recently observed in 7 Northern Inuit Dogs (NID)