🧬ap biology review

Polymerase Chain Reaction

Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated September 2025

Definition

The polymerase chain reaction (PCR) is a laboratory technique used to amplify a specific segment of DNA. It allows researchers to make multiple copies of a particular DNA sequence in order to study it or use it for further experiments.

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