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Bacterial evolution and oxygen adaptation: A timeline built from genomic, fossil, and chemical data. Colors show oxygen states: anaerobic (blue), aerobic (red), and proportion of aerobic lineages in ...

Molecular evolution examines how DNA, RNA and protein sequences change over time under the influence of mutation, selection, drift and recombination. Variation arises through replication errors and ...

Introduction -- A pattern emerges: early comparison of amino acid sequences -- A theory to match: the neutral theory of molecular evolution predicts a molecular clock -- Generation gap: the theory is ...