Wednesday, June 11, 2008

Bacteria make major evolutionary shift in the lab - life - 09 June 2008 - New Scientist

Bacteria make major evolutionary shift in the lab - life - 09 June 2008 - New Scientist: "But sometime around the 31,500th generation, something dramatic happened in just one of the populations – the bacteria suddenly acquired the ability to metabolise citrate, a second nutrient in their culture medium that E. coli normally cannot use."

This could be Nobel-worthy work. What's interesting is that it took 31,500 generations to adapt (and unclear from this article how many reproduction events that was). For complex organisms, 31,500 generations is far too slow to adapt to changes in the natural environment. Evolutionary processes presumably have evolved to work respond faster to environmental change in higher-level organisms.

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