Latest Adaptive mutation Stories
For more than a decade, Dr. Susan Rosenberg, professor of molecular and human genetics at Baylor College of Medicine, has solidified her premise that when cells are under stress, the rate of gene changes called mutations goes up, a finding that has implications for a wide variety of biological phenomena â€“ from evolution to antibiotic resistance and cancer.
Biologists at the University of Pennsylvania studying the processes of evolution appear to have resolved a longstanding conundrum: How can organisms be robust against the effects of mutations yet simultaneously adaptable when the environment changes?
New evidence from a study of yeast cells has resulted in the most detailed picture of an organismâ€™s evolutionary process to date, says a Texas A&M University chemical engineering professor whose findings provide the first direct evidence of aspects, which up until now have remained mostly theory.
When Dr. Susan Rosenberg, professor of molecular and human genetics at Baylor College of Medicine, first published her finding that the mutation rate increased in bacteria stressed by starvation, sometimes resulting in a rare change that benefited the bacteria, it was controversial.