$DNA$ is a double helix and:

Identify the $INCORRECT$ statement regarding packaging of $DNA$ in prokaryotes.

In what way does $RNA$ differ from $DNA$?

$A$: The $DNA$ molecule consists of two polynucleotide chains that run antiparallel to each other.
$R$: The $DNA$ molecular model was proposed by scientists $Watson$ and $Crick$.

Which of the following is the odd one out?

Identify the correct matching for Euchromatin and Heterochromatin from the given statements:
$I -$ Loosely packed
$II -$ Densely packed
$III -$ Darkly stained region
$IV -$ Lightly stained region
$V -$ Transcriptionally active chromatin
$VI -$ Transcriptionally inactive chromatin
Euchromatin $\quad\quad$ Heterochromatin