How does CRISPR gene editing technology modify DNA?

CRISPR is like a super precise pair of scissors that can cut and change parts of your DNA, just like you can fix a broken toy by taking it apart and putting it back together.

Imagine your DNA is like a long book, full of instructions for how your body works. Sometimes there are mistakes in the book, like typos or missing letters, which can make your body do something strange or not work as well as it should.

CRISPR uses a special tool called Cas9, which is like a very sharp pair of scissors. First, scientists find where they want to make a change in the DNA book. Then, they use another part of CRISPR, like a map and a pointer, to guide the scissors exactly to that spot.

Once there, Cas9 cuts both sides of the DNA strand, just like cutting through two pages of a book. Then scientists can take out the old instruction or add a new one, and your body will use the fixed DNA to make new cells with the change.

It’s like being able to rewrite parts of a story so that it ends up telling a better tale!