This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
A codon consists of - 
Select and explain. 
A. One molecule of amono acyl-t RNA, B. Two complementary base pairs, C. 3 consecutive nucleotide units, D. 4 individual nucleotides
C: 3 consecutive nucleotide units
Answer: C: 3 consecutive nucleotide units 
Explanation: C i.e. 3 consecutive nucleotide units