This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics, Subject name: Pathology
Not an autosomal dominant disorder- 
Select and explain. 
A. Alkaptonurea, B. Hereditary spherocytosis, C. Osteogenesis imperfecta, D. Gardner syndrome
A: Alkaptonurea
Answer: A: Alkaptonurea 
Explanation: Ans is 'a' i.e. Alkaptonurea * Acute intermittent porphyria is inherited as an autosomal dominant disorder.Autosomal dominant disordersNervousUrinaryGITHematologicalSkeletalMetabolic* Huntington disease* Neurofibromatosis* Myotonic dystrophy* Tuberous sclerosis* Retinoblastoma* Polycystic kidney* Familial polyposis coli* Gardners syndrome* Turcots syndrome* Lynch syndrome* Peutz Jagher s syndrome* Juvenile polyposis* Heriditary spherocytosis* Von- Willibrand dis* Marfan syndrome* EDS (some variant)* Osteogenesis imperfecta* Achondroplasia* Tuberous sclerosis* Crouzon syndrome* Hereditary multiple exostoses* Familial hypercho- lesterolemia* Acute in- termittent porphyria