One turn of $DNA$ possesses

Nucleosomes give chromosomes a beaded appearance. They help in the packaging of $DNA$ in chromosomes. $A$ nucleosome consists of:

$DNA$ exists in a double-stranded form whereas $RNA$ is mainly a single-stranded molecule. What is the likely reason for $DNA$ being double-stranded?

Which is known as soluble $RNA$?

The similarity between $DNA$ and $RNA$ is that both are

$DNA$ is acidic due to the presence of: