Identify the complementary nitrogenous base for the adenine nitrogenous base in the structure of $DNA$.

If a $DNA$ fragment contains $A = 166$ and $C = 144$,what is the total number of nitrogenous base pairs in that fragment?

If one strand of a double-stranded $DNA$ has the sequence $3'-ATTCGTAC-5'$,what will be the sequence of its complementary strand?

In which of the following is the split-gene arrangement found?

If the distance between two consecutive base pairs in a $DNA$ molecule is $0.34 \ nm$ and the total number of base pairs in a typical mammalian cell is $6.6 \times 10^9 \ bp$,what is the approximate length of the $DNA$ (in $m$)?

State the characteristic feature of $DNA$ in organisms.