DNA: stands for deoxyribnucleic acid. It is a molecule that carries the genetic instructions used in growth , development, functioning and reproduction of all known living organisms and many viruses. DNA has 2 strands.
RNA:stands for ribnucleic acid. It is an important molecule with long chains of nucleotide. A nucleotide contains a nitrogenous base , a ribose sugar, and a phosphate. RNA has 1 strand
