Genes often mutate and lose their natural or synthetic function over long-term evolution, which could be good if that stops drug resistance of infectious microbes or cancer. A new study by Stony Brook University researchers, published online in PNAS, shows that evolution can exploit positive feedback (PF) within cells to restore gene function. Such repair by evolution may provide a basis for regaining lost gene function, which has implications in medicine and other scientific endeavors.
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Source: Phys.org