This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
Who got nobel prize for discovery of split genes? 
Select and explain. 
A. Burnet, B. Susumu Tonegawa, C. Neils K jerne, D. Paul Ehrlich
B: Susumu Tonegawa
Answer: B: Susumu Tonegawa 
Explanation: Ans. (b)One gene - one protein concept in past.But it was overcome by discovery of split genes for immunoglobulins.Discovered by Susumu Tonegawa and awarded nobel prize for it.