The unit of inheritance is.

Statement $P$: Uracil is not present in the structure of $DNA$.
Statement $Q$: $A-T$ complementary base pairing is present in the structure of $DNA$.

Which organism has a $DNA$ consisting of $4.6 \times 10^6 \, bp$?

$DNA$ exists in a double-stranded form whereas $RNA$ is mainly a single-stranded molecule. What is the likely reason for $DNA$ being double-stranded?

$A$ $DNA$ molecule contains $10,000$ base pairs. What will be the length of this $DNA$ molecule?

The minimum requirement for a mutation is a change in: