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
The following are function of restriction endonuclease, EXCEPT: 
Select and explain. 
A. Cut both the strands of double stranded DNA, B. The cut ends produced by restriction endonuclease are sticky, C. The cut ends produced by restriction endonuclease are blunt, D. It is non specific to base pairs
D: It is non specific to base pairs
Answer: D: It is non specific to base pairs 
Explanation: Restriction endonuclease are the enzymes that cut the double stranded DNA. It is highly specific, recognises 4 to 7 base pairs. Sticky ends used in chimeric and hybrid molecule preparation. Ref: Harper, 27th Edition, Page 403; Textbook of Biochemistry By DM Vasudevan, 4th Edition, Page 430.