The component responsible for hereditary traits in all living organisms is:

How is the $DNA$ molecule useful to higher organisms?

Which of the following statements is $NOT$ true for $DNA$?

Explain the role of the following scientists in the discovery of the structure of $DNA$:
$1.$ Watson and Crick $(1953)$
$2.$ Erwin Chargaff

Assertion: In a $DNA$ molecule,$A-T$ rich parts melt before $G-C$ rich parts.
Reason: In between $A$ and $T$ there are three $H-$ bonds,whereas in between $G$ and $C$ there are two $H-$ bonds.

The octamer that forms a complex unit with $DNA$ is called: