Scientific Discoveries this Week – 10/07/92
Geneticists at Trinity College in Dublin have made a breakthrough in finding out why duplicate genes remain in the genome. Gene duplication involves the creation of sister genes, or duplicated genes, that can allow organisms to tolerate possibly deadly mutations. Researchers tested this robustness on yeast cells, showing that the gene duplication helped the cells survive in stressful conditions. They found that genes, thought to be duplicated over 100 million years ago, were still able to respond to different environments as they changed. Gene duplication was previously thought be redundant, but is now seen to be essential in the survival of entire species.