What are the most annoying things on Earth? Why, mosquitoes of course. They bite you and their bites are extremely irritating. Mosquitoes also carry life-threatening viruses, such as Malaria. However, scientists have come up with a way to get rid of mosquitoes carrying Malaria with the help of gene drives.
A gene drive is a self-generating “cut-and-paste system” that can sterilize mosquitoes. Well how do gene drives work? They operate using CRISPR/Cas9, precision molecular scissors that cut DNA. Scientists used CRISPR/Cas9 to disrupt the genes that are active in mosquito ovaries. If a female mosquito is missing one of these genes, they become sterile. Gene drives insert themselves into a target gene to assimilate every unaltered gene they pass. They break normal inheritance rules by being able to pass themselves into over 50% of an altered animal’s offspring.
The first gene drive that was made stopped mosquitoes from transmitting Malaria. This new gene drive would eliminate Malaria-carrying mosquitoes in the future by making the females sterile, unable to reproduce. This gene drive is not 100% perfect yet, but scientists are hoping to perfect it soon to be able to release it. They hope that this gene drive will be able to control different insect populations, not only mosquitoes.