The base adenine is found in ........

Explain the structure of nucleic acids.

Hydrolysis of which of the following nucleic acids does not give an equal number of $A$ and $T$ or $G$ and $C$?
$(A)$ $m$-$RNA$
$(B)$ Single strand $DNA$
$(C)$ $r$-$RNA$
$(D)$ Double helix $DNA$

The difference between $DNA$ and $RNA$ is based on the presence or absence of a hydroxyl group at which carbon atom of the sugar molecule?

Which of the following bases is a purine derivative?

$RNA$ and $DNA$ are chiral molecules,their chirality is due to