Final answer:
Gene editing with CRISPR is more precise and efficient compared to previous methods.
Step-by-step explanation:
The main difference between gene editing with CRISPR and how genes were edited previously is the level of precision and efficiency. Previously, gene editing was a complex and time-consuming process that involved creating specific mutations and relying on natural DNA repair mechanisms. CRISPR, on the other hand, allows scientists to directly target and modify specific DNA sequences with high accuracy.
CRISPR works by using a specific guide RNA molecule that leads the CRISPR-associated nucleases (Cas) to the desired location on the DNA strand. The Cas enzymes then cut the DNA at that specific location, allowing for precise gene editing. This is a much faster and more efficient method compared to previous techniques.