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  • Selection for Tuskless Elephants

    Selection for Tuskless Elephants

    Scientists at Work

    (6 min 39 sec) Working in Gorongosa National Park, Mozambique, Dr. Joyce Poole and colleagues made a striking observation: many female elephants lack tusks.

  • Human Skin Color: Evidence for Selection

    Human Skin Color: Evidence for Selection

    Activity

    This case study is based on the short film The Biology of Skin Color. Students use real data to propose hypotheses, make predictions, and justify claims with evidence. Also available in Spanish.

  • Effects of Natural Selection on Finch Beak Size

    Effects of Natural Selection on Finch Beak Size

    Data Point

    Rosemary and Peter Grant studied the change in beak depths of finches on the island of Daphne Major in the Galápagos Islands after a drought.

  • Evolution in Action: Data Analysis

    Evolution in Action: Data Analysis

    Activity

    These two activities support the film The Origin of Species: The Beak of the Finch. They provide students with the opportunity to analyze data collected by Princeton University evolutionary biologists Peter and Rosemary Grant.

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