Polymerase Chain Reaction (PCR)- Principle, Steps, Applications


Nucleic acids are macromolecules that store and transmit genetic information in cells. They are composed of smaller units called nucleotides, which have three parts: a nitrogenous base, a five-carbon sugar, and a phosphate group. There are two main types of nucleic acids: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA carries the instructions for making proteins, while RNA is involved in various cellular processes.