Polymerase chain reaction (PCR) is a molecular biological technique for amplifying (creating multiple copies of) DNA without using a living organism, such as E. coli or yeast. The technique allows a small sample of DNA to be copied multiple times so it can be used for analysis. PCR is commonly used in medical and biological research labs for a variety of tasks, such as the detection of hereditary diseases, the identification of genetic fingerprints, the diagnosis of infectious diseases, the cloning of genes, and paternity testing.
Source: Wikipedia |
