What is CRISPR? How does it work?
The CRISPR-Cas system, sometimes referred to as “CRISPR” for short, is a technology for editing DNA. It is made of a guide RNA and a Cas protein. The guide RNA leads the Cas protein to a particular DNA sequence. The Cas protein then acts as molecular scissors, cutting the DNA. When DNA is cut, cells initiate a repair process that can change or edit the DNA sequence. CRISPR can remove, add, or change DNA "letters."