In eukaryotic chromosomes,the association of $DNA$ with histone and non-histone proteins was reported by . . . . . . in $1974$.

What is the molecular formula of the sugar present in the structure of $DNA$?

Identify the correct features of $DNA$ from the following statements:
$(i)$ It is made of two polynucleotide chains.
(ii) The backbone is constituted by sugar and phosphate.
(iii) The two chains have anti-parallel polarity.
(iv) The bases in the two strands are linked through $H$-bonds.
$(v)$ Both chains are coiled in a right-handed fashion.

What is the similarity between $DNA$ and $RNA$?

What is the approximate molar concentration of $DNA$ in a human cell?

Which one of the following ratios is constant in $DNAs$ of different species?