Genome editing is a technology for manipulating genes by specifically cutting a target DNA sequence with the aid of a DNA cleavage enzyme. Unlike genetic recombination , which involves inserting exogenous genes, genome editing is regarded as a comparatively safe means of modifying an organism’s genes and has become prevalent in a variety of fields. What has made this advance possible is an innovative genome editing tool called CRISPR-Cas9. The scientists who developed it were awarded the Nobel Prize in Chemistry in 2020. This tool has now opened up a wide range of possibilities for “manufacturing” that would be impossible without genome editing technology.