Purines found both in $DNA$ and $RNA$ are
Adenine and thymine
Adenine and guanine
Guanine and cytosine
Cytosine and thymine
The $A/U$ and $G/U$ ratio in $RNA$ is
$DNA$ is transcribed by some viral $RNA$ using the enzyme
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
The bacterial genome contains
Which of the following is not found in $DNA$