Disingenuous Science in E. Coli Evolution Experiments
Head out Folly Road past Stinking Lake (which is not as bad as it sounds), keep going toward Deception Pass and you will reach the Darwin Ranch. If allowed access, ask them about Dr. Richard Lenski. The ranch hands will probably break into grins and invite you to lunch.
Evolutionary scientists like to study bacteria. One reason is that bacteria can be coaxed into having a huge number of generations. Lenski has over 75,000 Escherichia coli generations, and claims to have proof that the Bearded Buddha was right. Not so fact, Doc!
Colorized electron micrograph of Escherichia coli bacteria O157:H7. Image: CDC.gov (usage does not imply endorsement) |
Back in February 1988, Michigan State University biologist Richard Lenski began a long-term experiment to look at how repeatable evolution was. He decided to use Escherichia coli bacteria for the experiment and filled 12 flasks with a glucose-based growth media. Since then, each population is propagated every day by transferring 1% of the previous day’s culture into an equal volume of fresh medium. The bacteria grow quickly in a few hours. However, the glucose runs out once they’ve grown 100-fold. The cells then basically enter stasis until the next day, when 1% of each population is transferred into fresh medium. Dr. Lenski further explains,
To read the rest, head on over to "Richard Lenski, E. coli, and the Long-Term Evolution Experiment (LTEE)." You may want to also check out "Bacteria ‘evolving in the lab’? ‘A poke in the eye for anti-evolutionists’?"