$RNA$ and $DNA$ are chiral molecules, their chirality is due to

In a nucleoside,the base is attached to which position of the sugar molecule?

In nucleic acids,the sequence of the backbone components is

Assertion $(A)$: Adenine and guanine are present in $RNA$ as purine bases.
Reason $(R)$: The base uracil is present in $RNA$.
The correct option among the following is:

What is the relationship between nucleotide triplets and amino acids called?

Codon is present in