Question

In both DNA and RNA, heterocyclic base and phosphate ester linkages are at:

• A. $C-5^{\prime }$ and $C-2^{\prime }$ respectively of the sugar molecule
• B. $C-2^{\prime }$ and $C-5^{\prime }$ respectively of the sugar molecule
• C. $C-1^{\prime }$ and $C-5^{\prime }$ respectively of the sugar molecule
• D. $C-5^{\prime }$ and $C-1^{\prime }$ respectively of the sugar molecule

Answer 1

Answer: (C)

$C-1^{\prime }$ and $C-5^{\prime }$ respectively of the sugar molecule

Heterocyclic base is attach to $C_1^1$ of sugar while phosphate linkage is at $C_5^1$