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  • Lactose Intolerance: Fact or Fiction

    Lactose Intolerance: Fact or Fiction

    Lessons

    In this activity, students evaluate and discuss statements about the evolutionary relationship between milk consumption and lactose tolerance discussed in the short film Making of the Fittest: Got Lactase? The Co-evolution of Genes and Culture.

  • Got Lactase? Blood Glucose Data Analysis

    Got Lactase? Blood Glucose Data Analysis

    Lessons

    Students interpret the results of two different tests for lactase persistence.

  • AZT blocks reverse transcriptase

    AZT blocks reverse transcriptase

    Animations

    (1 min 46 sec) HIV's reverse transcriptase mistakes AZT for thymidine. Once incorporated, AZT stops reverse transcription.

  • PPAR-gamma Activation in the Fat Cell

    PPAR-gamma Activation in the Fat Cell

    Animations

    (2 min 49 sec) The PPAR-gamma receptor activates certain genes in a fat cell, resulting in the storage of fat and changes in hormone levels.