If $A$ and $C$ make $30\%$ and $20\%$ of $DNA$,respectively,what will be the percentage composition of $T$ and $G$?

Which of the following nitrogenous bases has a single-ring structure?

What is the number of base pairs $(bp)$ in a nucleosome (in $,bp$)?

In his experiments on the chemistry of $DNA$,Chargaff estimated the base composition of human sperms and found that Adenine constituted $31\%$ and Guanine $19\%$. The quantity of Cytosine in the $DNA$ of human somatic cell is likely to be (in $\%$)

Define the following terms: Nucleoside and Histones.

$DNA$ segments that can switch their position are called: