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
tRNArmet would recognize : (PGI Nov 2009) 
Select and explain. 
A. AUG, B. UGC, C. GUG, D. GCU
A: AUG
Answer: A: AUG 
Explanation: Ans: A (AUG) "AUG which codes for methionineQ, serve as the initiator codon in mammalian cells Harper 27th/366'Three of codons, UAG. UGG & UAA. do not code for amino acids, but rather are termination codons (stop or nonsense codons)Q -Lippincott 4th/432