CRISPR-Cas9 technology is to gene editing as a librarian is to _____?

CRISPR‑Cas9 is a precise tool that edits DNA, just as a librarian is a precise tool for finding and arranging books. The librarian’s job is to locate, classify, and keep books in the right place, making information easy to find. In the same way, CRISPR‑Cas9 finds a specific DNA sequence, cuts it, and lets scientists insert, delete, or correct genes. For example, a librarian might move a book from one shelf to another; CRISPR‑Cas9 moves a piece of DNA into a new spot in the genome. Thus, CRISPR‑Cas9 technology is to gene editing what a librarian is to organizing books.