Nucleotide arrangement in $DNA$ can be seen by

The distance between two adjacent base pairs in a $DNA$ double helix is:

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

$A$ $DNA$ fragment contains $3.2$ kilobases $(kb)$. If the $DNA$ fragment contains $820$ adenine molecules,calculate the number of cytosine molecules.

$A$ $DNA$ molecule contains $10,000$ base pairs. What will be the length of this $DNA$ molecule?

With which nitrogenous base does $Adenine$ pair?