Richard E. Lenski

Competition between continuously evolving lineages in asexual populations

The paper develops a theoretical framework to model lineage interference in asexual populations, showing that beneficial mutations must exceed a critical threshold to fix, across all mutation-rate regimes.

Replaying Evolution to Test the Cause of Extinction of One Ecotype in an Experimentally Evolved Population

The paper replays an evolutionary experiment to determine if the extinction of a bacterial ecotype was deterministic or due to chance, finding it was likely caused by an unexpected environmental perturbation.

Evolution of organismal stoichiometry in a 50,000-generation experiment with Escherichia coli

This study tracks evolutionary changes in elemental stoichiometry of Escherichia coli over 50,000 generations under carbon limitation, showing predictable increases in nitrogen and phosphorus content.

Evolution and coexistence in response to a key innovation in a long-term evolution experiment with Escherichia coli

The paper examines how the evolution of citrate consumption in E. coli altered ecosystem dynamics by enabling coexistence between Cit+ and Cit- clades through cross-feeding.

Selection for Intermediate Genotypes Enables a Key Innovation in Phage Lambda

This study shows that intermediate genotypes in phage lambda were adaptive and that coevolution of hosts favored their emergence during the evolution of a new receptor usage ability.