reverse genetics

Reverse genetics is a method of genetic research that begins with a gene of unknown function and uses molecular analysis to determine its phenotype. This approach is the opposite of traditional genetics, which starts with a mutant phenotype and identifies the responsible gene. A key tool in reverse genetics is gene knockout, where a cloned gene of unknown function is mutated and used to replace the original gene, allowing researchers to observe the resulting phenotypic changes and understand the gene's biological role.1

Gene knockout technology is notably used in creating knockout mice. In these mice, a specific gene is inactivated, leading to observable changes in their traits (phenotype). Studying these changes provides insights into the function of individual genes and their potential involvement in human diseases, as mice share many genes with humans.2