Presentation Detail
Experimental Evolution Wiser, Michael [1], Lenski, Richard E [2]. Analysis of Fitness Trajectories in a Long Term Evolution Experiment. Evolution is the fundamental shaping force of life as we know it. Experimental evolution systems allow us to study the process of evolution itself; by subjecting replicate populations to a given environment, we can learn about the predictability and the reproducibility of evolutionary outcomes. Here we analyze the trajectories of fitness within 12 replicate populations of Escherichia coli grown for 50,000 generations in a laboratory setting. We present a new mathematical relationship of fitness over time, which not only better fits the data than previous models, but also gives more accurate predictions of long-term fitness when only earlier generation time points are analyzed. We also present analysis of variance in fitness over time, and what this variance can tell us about the underlying adaptive landscape experienced by these populations.
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1 - Michigan State University, BEACON Center for the Study of Evolution in Action, 567 Wilson Rd, East Lansing, MI, 48824, USA
2 -
Keywords:
Experimental Evolution
fitness trajectory
adaptive landscape.
Presentation Type: Regular Oral Presentation
Session: 56
Location: Rendezvous B/Snowbird Center
Date: Sunday, June 23rd, 2013
Time: 9:00 AM
Number: 56003
Abstract ID:25
Candidate for Awards:W.D. Hamilton Award for Outstanding Student Presentation | 