title: Knobby, a semilethal mutation resulting in defective down in the turkey.
mesh_terms: D000818:Animals; D005241:Feathers / Q000002:abnormalities* / Q000473:pathology; D005260:Female; D005313:Fetal Death / Q000662:veterinary; D005804:Genes, Lethal; D008297:Male; D009154:Mutation; D010641:Phenotype; D011201:Poultry Diseases / Q000175:diagnosis / Q000235:genetics*; D011247:Pregnancy; D016038:Skin Transplantation; D014184:Transplantation, Homologous; D014422:Turkeys