Transcription
전사
Embed This Widget
Add the script tag and a data attribute to embed this widget.
<script src="https://cdn.jsdelivr.net/npm/speciesfyi-embed@1/dist/embed.min.js" defer></script>
<div data-speciesfyi="glossary" data-slug="transcription"></div>Embed via iframe for maximum compatibility.
<iframe src="https://speciesfyi.com/iframe/glossary/transcription/" width="420" height="400" frameborder="0" style="border:0;border-radius:10px;max-width:100%" loading="lazy"></iframe>Paste this URL in WordPress, Medium, or any oEmbed-compatible platform.
https://speciesfyi.com/glossary/transcription/Add a dynamic SVG badge to your README or docs.
[](https://speciesfyi.com/glossary/transcription/)Use the native HTML custom element.
<script src="https://cdn.jsdelivr.net/npm/speciesfyi-embed@1/dist/embed.min.js" defer></script>
<speciesfyi-glossary slug="transcription"></speciesfyi-glossary>Definition
The process of copying a segment of DNA into messenger RNA, the first step in gene expression.
Detailed Explanation
Transcription is highly regulated — promoter regions, transcription factors, and enhancers determine when, where, and how much a gene is expressed. Only a small fraction of genes are active in any given cell at any time, explaining how all cells contain the same genome yet liver cells differ from neurons. Transcription regulation is disrupted in cancer, where genes that control cell division are overexpressed or silenced.