question_answer

In both DNA and RNA, heterocyclic base and phosphate ester linkages are at     AIEEE  Solved  Paper-2005

A) \[C_{5}^{'}\]and\[C_{1}^{'}\]respectively of the sugar molecule

B) \[C_{1}^{'}\]and\[C_{5}^{'}\]respectively of the sugar molecule

C) \[C_{2}^{'}\]and\[C_{5}^{'}\]respectively of the sugar molecule

D) \[C_{5}^{'}\]and\[C_{2}^{'}\]respectively of the sugar molecule

Correct Answer: B

Solution :

Synthesis of RNA/DNA from phosphoric acid, ribose and cytosine is given below Thus, ester linkages are at\[C_{5}^{'}\]and\[C_{1}^{'}\]of sugar molecule.