PCR technology, or Polymerase Chain Reaction, is a laboratory technique used to amplify small segments of DNA. This process allows scientists to create millions of copies of a specific DNA sequence, making it easier to study and analyze. PCR is widely used in various fields, including genetics, forensics, and medical diagnostics. The PCR process involves repeated cycles of heating and cooling, which separate the DNA strands and allow DNA polymerase enzymes to synthesize new strands. Each cycle doubles the amount of DNA, leading to exponential growth. This powerful technique has revolutionized molecular biology and has numerous applications, such as detecting pathogens and conducting genetic research.