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Evolution in action

Natural selection, drift and the evidence that all life is related.

Evolution8 steps
Start with Evolution

Steps

Take the steps in order or jump to any of them. Readings link to the labs and sources behind them, and the quiz at the end is graded on our server.

  1. EvolutionStep 1: Read, 50 XP
  2. Natural selectionStep 2: Read, 50 XP
  3. Genetic driftStep 3: Read, 50 XP
  4. Common ancestryStep 4: Read, 50 XP
  5. Experimental evolutionStep 5: Read, 50 XP
  6. Antimicrobial resistanceStep 6: Read, 50 XP
  7. Evolution LabStep 7: Lab, 100 XP, once per lab
  8. Evolution in actionStep 8: Quiz, up to 250 XP

About evolution

Evolution is how living things change over many generations. It explains why there are so many kinds of life and how they are related.

Evolutionary biologists study natural selection, genetic drift and common ancestry, using fossils, genomes and experiments.

The field combines population genetics (Hardy-Weinberg, drift and selection), comparative genomics, fossils, experimental evolution and the search for the last universal common ancestor.

The Evolution field guide