A Canadian-led study has discovered a new mode of disease evolution, giving scientists another way to identify and assign risk to emerging diseases, UPI reported. Scientists at McMaster University, the University of Melbourne and the University of Illinois found bacteria can develop into illness-causing pathogens by rewiring regulatory DNA, the genetic material that controls disease-causing genes in a body. "Bacterial cells contain about 5,000 different genes, but only a fraction of them are used at any given time," said McMaster University Assistant Professor Brian Coombes, who led the research. "This opens up significant new challenges for us as we move forward with this idea of assigning risk to new pathogens," Coombes said. "Because now, we know it's not just gene content -- it is gene content plus regulation of those genes."
