Scientists studying how microbes evolve have long assumed that nearly all new genetic mutations get passed down at a predictable pace and usually without either helping or hurting the microbe in ...

Natural pathogenic bacteria populations can harbour mutator alleles (with high mutation rates) that may offer a selection advantage. In the March 30 Science, Giraud et al. describe a model to ...

In the 1940s, the famous Luria–Delbrück experiment showed that bacteria evolve resistance to drugs they'd never encountered thanks to a random mutational process. When you purchase through links on ...

Traditional biochemical methods of studying human gene mutations are often laborious and costly. Now bioengineers at the University of California San Diego have developed a new simple approach to ...

As rates of colorectal cancer soar in adults younger than 50—with the American Cancer Society reporting it to be the leading cause of cancer death among such men and the second-leading among such ...

At one time, colorectal disease was considered to be a disorder of older adults. But the demographics of patients have changed significantly in recent years, and colorectal cancer rates are rising ...