A sequence is having two ends, 5’ and 3’. Which of the following statements is correct regarding the nature of the ends?

A. The 5’ end is having hydroxyl group

B. The 5’ end is having phosphate group

C. The 3’ end is having phosphate group

D.  Any group can be present at any end

Explanation: The 5’ end is having a phosphate group. As in a DNA sequence, the 5’ end is characterized by phosphate group and the 3’ end is characterized by a hydroxyl group.

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