Which one of the following makes use of $RNA$ as a template to synthesize $DNA$
Reverse transcriptase
$DNA$ dependant $RNA$ polymerase
$DNA$ polymerase
$RNA$ polymerase
In a given $DNA$ segment the number of nucleotides of guanine is $75$ and those of thymine is $75$. The total number of nucleotides in the segment will be
A child receives
Cytidine is a
If a double stranded DNA has $20\; \%$ of cytosine, what will be the percentage of adenine in it?
State the physical structure of DNA.