The structure of the nitrogen-containing heterocyclic base given below represents:

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?

The total number of correct statements regarding the nucleic acids is..............
$A$. $RNA$ is regarded as the reserve of genetic information.
$B$. $DNA$ molecule self-duplicates during cell division.
$C$. $DNA$ synthesizes proteins in the cell.
$D$. The message for the synthesis of particular proteins is present in $DNA$.
$E$. Identical $DNA$ strands are transferred to daughter cells.

The sequence in nucleic acids is .......

The double helical structure of $DNA$ was proposed by

Chargaff's rule states that in an organism