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Founded in 1988, the Long-Term Evolution Experiment (LTEE) is the world’s longest-running ongoing evolution experiment now spanning 75,000 generations. (Illustration: Mark Belan/ArtSciStudios)
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Founded in 1988, the Long-Term Evolution Experiment (LTEE) is the world’s longest-running ongoing evolution experiment now spanning 75,000 generations. Twelve genetically identical populations of the bacterium Escherichia coli have been allowed to evolve under constant conditions, and have uncovered general principles of evolutionary dynamics, such as how evolutionary novelties arise. (Illustration: Mark Belan/ArtSciStudios)