An influential scientific discovery that was once celebrated as compelling evidence for evolution may require reinterpretation, according to a growing number of scientists and researchers.
In 2008, biologist Richard Lenski of Michigan State University jubilantly announced that he had witnessed a “major evolutionary innovation.” Lenski, as part of his Long-Term Experimental Evolution (LTEE) project, had been carefully observing the bacteria Escherichia coli (E. coli) reproduce in a lab. Finally, after 20 years and 31,000 E. coli generations, Lenski noticed that one of the bacteria populations had seemingly mutated and acquired the ability to process the chemical citrate when oxygen was present
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