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

What type of sugar molecule is present in $DNA$?

When $RNA$ is hydrolysed,there is no relationship among the quantities of different bases obtained. What does this fact suggest about the structure of $RNA$?

Which of the following nitrogen bases of nucleic acids is derived from purine?

The compound shown in the image is a base found in $DNA$. Identify its complementary base in $DNA$ strands.

Which from the following nitrogen bases of nucleic acids is derived from purine?