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: Medicine
All are autosomal recessive except: (Repeat) 
Select and explain. 
A. Haemochromatosis, B. Sickle cell anaemia, C. Friederich ataxia, D. B. Huntington's chorea
D: B. Huntington's chorea
Answer: D: B. Huntington's chorea 
Explanation: Ans: D (Huntington's chorea) Ref: Harrison's Principles of Internal Medicine, 18th edition, page 3148Explanation: (See the following table)