How Many Mutations Does It Take to Make a New Trait? (2 of 10) (IMAGE)

American Association for the Advancement of Science (AAAS)

How Many Mutations Does It Take to Make a New Trait? (2 of 10)

Caption

E. coli's OmpF protein, novel viral receptor. This image relates to a paper that appeared in the Jan. 27, 2012, issue of Science, published by AAAS. The paper, by Justin R. Meyer at Michigan State University in East Lansing, Mich., and colleagues, was titled, “Repeatability and Contingency in the Evolution of a Key Innovation in Phage Lambda.”

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[Image courtesy of Justin Meyer]

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