This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Hyper coagulability due to defective factor v gene is called 
Select and explain. 
A. Lisbon mutation, B. Leiden mutation, C. Antiphoshpolipid syndrome, D. Inducible thrombocytopenia syndrome
B: Leiden mutation
Answer: B: Leiden mutation 
Explanation: Ref Robbins 8/p131,8/e p 122 ,9/e p123