The two strands of $DNA$ are held together by
peptide bonds
phosphodiester bonds
hydrogen bonds
$S- S$ bonds
Identify the basic amino acid from the following.
Thirty percent of the bases in a sample of $DNA$ extracted from eukaryotic cells is adenine. What percentage of cytosine is present in this $DNA$ ?
Nucleosomes are bounded by
If a length of $DNA$ has $45,000$ base pairs, how many complete turns will the $DNA$ molecule take?
$DNA$ strands are antiparallel because of the presence of