The prokaryotic genetic system contains
$DNA$ and histones
Either $DNA$ and histones
$DNA$ but no histones
Neither $DNA$ nor histones
Feulgen reaction is a special test for
Which one of the following is a base analogue
The salivary gland chromosomes in the dipteran larvae, are useful in gene mapping because
It has been found in many cells that ribosomes occur in chains along $mRNA$ molecules. What is the advantage of this arrangement as compared to a situation in which ribosomes occur singly
Satellite $DNA$ is present in