Basic Molecular Biology: PCR and Real-Time PCR – Principle of PCR

Polymerase chain reaction or PCR is a technique for amplifying specific DNA fragments from a DNA template. PCR happens in three basic steps: denaturation, annealing, and extension. This video will show the steps in amplifying specific DNA fragments for the PCR technique. This video can also be viewed at https://reach.cdc.gov/job-aids-resources