In one complete turn of $B-DNA,$ how many purine $N_2$-bases are present?

$RNA$ is a polymer of

$NHC$ (Non-Histone Chromosomal) structural proteins are:

Jumping genes are now known as

What is the molecular formula of the sugar present in the structure of $DNA$?

Which molecule contains the coded information required to produce the chemicals necessary for the organism to function like its parents?