Overview of PCR

Polymerase chain reaction (PCR) is a Nobel-prize-winning technology used to amplify, or copy, specific sequences of genetic material (called deoxyribonucleic acid, or DNA). Using this technology, scientists can produce large enough quantities of DNA to be able to examine it in detail for a variety of different purposes, including:

Diagnosing specific genetic conditions or illnesses
Predicting how well an individual will respond to a medication
Identifying viruses
Connecting a specific suspect to a crime
Establishing maternity, paternity or other blood relationships
Determining the identity of a deceased person