![](https://webarchive.library.unt.edu/eot2008/20090509071237im_/http://www.nsf.gov/images/x.gif) News From the Field Viruses Evolve to Play By Host Rules, According to University of Pennsylvania Researchers
![](https://webarchive.library.unt.edu/eot2008/20090509071237im_/http://www.nsf.gov/images/greenlineshort.jpg)
March 3, 2008
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It appears that viruses that infect a bacterium spell their own genes in the same way the bacterium does, obeying the rules of its host and demonstrating co-evolutionary behavior.
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Source University of Pennsylvania
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