# Polymerase Chain Reaction (PCR) The **polymerase chain reaction (PCR)** is a remarkable and very powerful way to copy DNA and make, in fact, as many copies of DNA as you want to, with a really simple but powerful technique. To learn about how this technique works and where it is being used, review the following content and return here afterward. * [Polymerase Chain Reaction - Introduction to Genomic Technologies offered by Johns Hopkins University](https://www.coursera.org/lecture/introduction-genomics/polymerase-chain-reaction-c7c2T) * [Polymerase Chain Reaction article by KhanAcademy](https://www.khanacademy.org/science/ap-biology/gene-expression-and-regulation/biotechnology/a/polymerase-chain-reaction-pcr) Also, watch the video below. {% embed url="" %} ## Congratulations! If you made it here, then congratulations! You have successfully completed this section. Move to the next portion of the guide with the arrow buttons below. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.abi.am/abi-omicss-guide-2021/week-5/experimental-techniques/polymerase-chain-reaction-pcr.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.