Answer
Genome editing is a technique used to change the DNA of an organism. It can be used to correct genetic defects, insert new genes, or modify existing genes. The technique was pioneered by George Church, a professor of genetics at Harvard Medical School. Church developed the first genome editing tool, called CRISPR-Cas9, in 2012. CRISPR-Cas9 is a powerful tool that can be used to edit any gene in any organism.