Search Results

Showing 1-4 of 4 Resources
  • Anole Lizards: An Example of Speciation

    Anole Lizards: An Example of Speciation

    Animation

    (2 min 38 sec) This animation features the anole lizards as an example of how a single species can split and multiply into many different species with distinct traits.

  • Color Variation Over Time in Rock Pocket Mouse Populations

    Color Variation Over Time in Rock Pocket Mouse Populations

    Activity

    A data collection and analysis lesson that examines selection for coat color in pocket mouse populations on different color substrates over time. Also available in Spanish.

  • Wing Morph

    Wing Morph

    Animation

    (29 sec) This "morph" animation demonstrates how the expression of a particular toolkit gene in a butterfly larva corresponds to the location of the wing eyespots in an adult butterfly.

  • Evolution of the Y Chromosome

    Evolution of the Y Chromosome

    Animation

    (5 min 39 sec) How did the human Y chromosome become so small relative to its X counterpart? This animation depicts the 300-million-year odyssey of the sex chromosomes that began when the proto X and Y were an identical pair.