The main similarity between a mRNA (messenger ribonucleic acid) and a DNA (Deoxyribonucleic acid) is that both are found inside the cells of all living organisms. Despite this similarity, the two have various differences as highlighted below:
The structure of a DNA is composed of deoxyribose which is a pentose sugar while on the other hand; the structure of mRNA is composed of ribose sugar.
DNA’s nitrogenous bases possess thymine as its pyrimidine while uracil forms the base for mRNA’s pyrimidine.
DNA is positioned at the nucleus of a cell while mRNA moves to the cytoplasm of the cell during protein synthesis and attaches itself to a ribosome so as to facilitate the process of protein synthesis.
In terms of structure DNA has two strands while mRNA has one strand.
DNA has a very long lifespan as compared to that of mRNA.
mRNA conveys genetic information which is in form of genetic codes from the DNA to the cytoplasm of a cell. It also performs a complementary function to one of the two strands found in the structure of a DNA.