PCR, or Polymerase Chain Reaction, is a biotechnology that allows for the amplification of specific DNA segments outside of a cell using a test tube. The process involves denaturation, annealing, and DNA synthesis steps to create multiple copies of DNA for various applications.

The chapter delves into the author's appreciation for technology, particularly the copy machine, drawing parallels to the biotechnological marvel of PCR. PCR, or Polymerase Chain Reaction, is highlighted as a revolutionary tool for replicating DNA outside of living cells.

Exploration of the PCR process, detailing the essential components required for DNA replication. The chapter delves into the three key steps of denaturation, annealing, and DNA synthesis involved in the PCR sequence.

PCR is a crucial technology for creating copies of DNA fragments, essential for DNA analysis in various fields like DNA fingerprinting in crime scene investigations and diagnosing diseases such as COVID-19 through real-time reverse transcription PCR tests.