Write the important structural and functional differences between $DNA$ and $RNA$.

(N/A) The structural differences between $DNA$ and $RNA$ are as follows:

$DNA$	$RNA$
$1.$ The sugar moiety in $DNA$ molecules is $\beta-D-2$-deoxyribose.	$1.$ The sugar moiety in $RNA$ molecules is $\beta-D$-ribose.
$2.$ $DNA$ contains thymine $(T)$. It does not contain uracil $(U)$.	$2.$ $RNA$ contains uracil $(U)$. It does not contain thymine $(T)$.
$3.$ The helical structure of $DNA$ is double-stranded.	$3.$ The helical structure of $RNA$ is single-stranded.

The functional differences between $DNA$ and $RNA$ are as follows:

$DNA$	$RNA$
$1.$ $DNA$ is the chemical basis of heredity.	$1.$ $RNA$ is not responsible for heredity.
$2.$ $DNA$ molecules do not synthesize proteins,but transfer coded messages for the synthesis of proteins in the cells.	$2.$ Proteins are synthesized by $RNA$ molecules in the cells.