PCR (polymerase chain reaction) is an essential technique that allows scientists to make more copies of a piece of DNA for countless different purposes. Watch to learn how PCR works!
This video is part of the Bio-Dictionary for "The Explorer's Guide to Biology" (XBio for short), which is a bold re-imagining of the biology textbook for the 21st century. Visit explorebiology.org for free content that focuses on stories of scientific discovery.
