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  • CRISPR-Cas 9 Mechanism & Applications

    CRISPR-Cas 9 Mechanism & Applications

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    Explore this dynamic interactive to learn the basic principles of how this revolutionary tool works and the many ways in which scientists are using it in their research.

  • Regulation of the Lactase Gene

    Regulation of the Lactase Gene

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    Lactase persistence results from a mutation that changes how transcription factors interact, thereby affecting gene expression.

  • Recent Adaptations in Humans

    Recent Adaptations in Humans

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    Lactose tolerance, sickle cell anemia, and bitter taste perception are three examples of recently evolved human traits.

  • Bacterial Quorum Sensing

    Bacterial Quorum Sensing

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    Understand how quorum sensing works by reasoning through experiments involving genetically-engineered bioluminescent bacteria.

  • Genetic Switches

    Genetic Switches

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    Learn about how gene switches can control expression of genes in different tissues.

  • RNA Interference

    RNA Interference

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    RNA interference is an exciting new research tool for shutting down genes. It could also yield new medical treatments.