Kısaca
CRISPR became famous for gene editing, but it started as bacterial defense against viruses. Bacteria store a snippet of invader DNA and later cut matching sequences to stop attacks.
CRISPR is now linked to labs, but the story began in a microscopic battlefield. Bacteria face constant viral attacks and evolved a surprising solution.
They keep fragments of viral DNA in their genome like a memory archive. When the same virus returns, guide RNA finds the target and a Cas enzyme cuts the DNA.
Once discovered, scientists turned this into a programmable molecular scissors. By changing the guide, you can redirect it to different genes.
The result is a tool with revolutionary impact in biology. It also shows how sophisticated nature can be, even in the simplest organisms.
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