in vitro mutagenesis

In vitro mutagenesis is a technique in molecular biology that allows scientists to create specific mutations in cloned DNA. Unlike older methods that relied on random, spontaneous mutations, in vitro mutagenesis enables researchers to precisely alter a gene's sequence in a laboratory setting. This is often achieved using oligonucleotide-directed mutagenesis, where a short, synthetic DNA strand with the desired change is used to guide the modification of the cloned gene. The altered gene can then be reintroduced into a cell to study the effects of the specific mutation, providing valuable insights into biological processes and protein functions. This technique, pioneered by biochemist Michael Smith, revolutionized genetic research and earned him a share of the 1993 Nobel Prize in Chemistry.12