This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of nucleic acids, Subject name: Biochemistry
What is the percentage of coding DNA in genome? 
Select and explain. 
A. 0.50%, B. 1%, C. 1.50%, D. 2%
C: 1.50%
Answer: C: 1.50% 
Explanation: REPEATED QUESTION