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  • Stalking the Genetic Basis of a Trait

    Stalking the Genetic Basis of a Trait

    Activity

    In this activity students analyze data on the expression of the tb1 gene and use it to formulate an explanation as to how a specific difference in the corn version of the gene explains the phenotype of less branching.

  • Film Guide for Popped Secret: The Mysterious Origin of Corn

    Film Guide for Popped Secret: The Mysterious Origin of Corn

    Film Guide

    The following classroom-ready resources complement the film Popped Secret: The Mysterious Origin of Corn, which tells the story of how geneticists and archaeologists have come together to determine how and where corn was domesticated nearly 9,000 years ago. Also available in Spanish.

  • How We Get Our Skin Color

    How We Get Our Skin Color

    Animation

    (3 min 32 sec) This engaging animation shows how human skin cells produce the pigment melanin, which gives skin its color. 

  • Seeing Single Molecules Move

    Seeing Single Molecules Move

    Animation

    (1 min 40 sec) Single-molecule analysis using super-resolution microscopes reveals that transcription factors are not usually found bound to their binding sites on DNA.

  • Modeling the Regulatory Switches of the Pitx1 Gene in Stickleback Fish

    Modeling the Regulatory Switches of the Pitx1 Gene in Stickleback Fish

    Activity

    A hands-on activity in which students interpret molecular diagrams and build physical models of eukaryotic gene regulation.

  • Regulation of Eukaryotic DNA Transcription

    Regulation of Eukaryotic DNA Transcription

    Animation

    (2 min 5 sec) General transcription factors, activators, and repressors interact to regulate the transcription of eukaryotic DNA into RNA.

  • The LUX operon controls light production

    The LUX operon controls light production

    Animation

    (2 min 25 sec) A single transcription factor controls this operon, which contains five genes necessary to produce bioluminescence.

  • The molecular cascade in bacterial quorum sensing

    The molecular cascade in bacterial quorum sensing

    Animation

    (3 min 20 sec) Quorum sensing regulates gene expression by a protein phosphorylation cascade that controls transcription.

  • 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.

  • X Inactivation

    X Inactivation

    Animation

    (55 sec) This animation shows how the random deactivation of one of the X chromosomes in a pair can lead to a mozaicism in the expression genes. 

  • MIX-1

    MIX-1

    Animation

    (3 min 39 sec) This animation shows how MIX-1 facilitates both chromosome condensation and dosage compensation.

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