Richard Lenski

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This article is about Richard Lenski, the evolutionary biologist. For the Lutheran commentator (his ancestor), see Richard C. H. Lenski.
Richard Lenski
Richard Lenski.jpg
Born (1956-08-13)August 13, 1956
Fields Evolutionary biology
Institutions Michigan State University
University of California, Irvine
Alma mater University of North Carolina, Chapel Hill
Oberlin College
Thesis Effects of competition and disturbance on ground beetle populations (1982)
Known for E. coli long-term evolution experiment
Notable awards Sewall Wright Award (2012)
MacArthur Fellowship (1996)
Website
myxo.css.msu.edu

Richard E. Lenski (born August 13, 1956) is an American evolutionary biologist,[1] best known for his 25-year long-term E. coli evolution experiment, and his work with digital organisms, using Avida.

Early life

Richard E. Lenski is the son of sociologist Gerhard Lenski and poet Jean Lenski (née Cappelmann).[2] He is also the great-nephew of children's author Lois Lenski and the great-grandson of Lutheran commentator Richard C. H. Lenski. He earned his BA from Oberlin College in 1976, and his PhD from the University of North Carolina in 1982.[3]

Career

Lenski won a Guggenheim Fellowship in 1992 and a MacArthur Fellowship in 1996, and in 2006 he was elected to the United States National Academy of Sciences.[citation needed]

Lenski is a fellow at the American Academy of Microbiology and the American Academy of Arts and Sciences and holds the office Hannah Distinguished Professor of microbial ecology at Michigan State University.[citation needed] Lenski has an Erdős number of 3, having co-authored a publication with a mathematician and a computational biologist, each of whom has an Erdős number of 2.[4]

On February 17, 2010, he co-founded the NSF Science and Technology Center for the Study of Evolution in Action, known as the BEACON Center.[citation needed]

E. coli experiment

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Main article: E. coli long-term evolution experiment
The 12 evolving E. coli populations on June 25, 2008

The E. coli long-term evolution experiment is an ongoing study in experimental evolution led by Richard Lenski that has been tracking genetic changes in 12 initially identical populations of asexual Escherichia coli bacteria since 24 February 1988.[5] The populations reached the milestone of 50,000 generations in February 2010.

Since the experiment's inception, Lenski and his colleagues have reported a wide array of genetic changes; some evolutionary adaptations have occurred in all 12 populations, while others have only appeared in one or a few populations. One particularly striking adaptation was the evolution of a strain of E. coli that was able to use citrate as a carbon source in an aerobic environment.[6]

Avida simulation

Richard Lenski, Charles Ofria, et al. at Michigan State University developed an artificial life computer program with the ability to detail the evolution of complex systems. The system uses values set to determine random mutations and allows for the effect of natural selection to conserve beneficial traits. The program was dubbed Avida and starts with an artificial petri dish where organisms reproduce and perform mathematical calculations to acquire rewards of more computer time for replication. The program randomly adds mutations to copies of the artificial organisms to allow for natural selection. As the artificial life reproduced, different lines adapted and evolved depending on their set environments. The beneficial side to the program is that it parallels that of real life at rapid speeds.[7][8][9][10]

Media

In August 2013, having been inspired by a presentation by Titus Brown on the role of social media in science, Lenski began blogging at Telliamed Revisited and tweeting as @RELenski.[11]

In a debate over evolution with Bill Nye, creationist Ken Ham cited Lenski's work on E. coli evolving the ability to metabolize citrate. Lenski strongly criticized Ham's citation of his work and the conclusions Ham drew from it.[12]

References

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External links

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  1. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ Photo of Richard Lenski and Gerhard Lenski for the father's 90th birthday Richard Lenski on Twitter. August 17, 2014. Retrieved August 18, 2014.
  3. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ Lua error in package.lua at line 80: module 'strict' not found.
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  11. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  12. ↑ https://telliamedrevisited.wordpress.com/2014/02/05/ham-on-nye-debate-follow-up-1/, https://telliamedrevisited.wordpress.com/2014/02/06/ham-on-nye-debate-follow-up-2/, https://telliamedrevisited.wordpress.com/2014/02/07/zachary-blount-on-ham-on-nye-debate-follow-up-3/
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