Search Results

Search Results

Showing 101-120 of 167 Resources
  • Natural Selection of Lactose Tolerance

    Natural Selection of Lactose Tolerance

    Animations

    (46 sec) Environmental and cultural factors can affect whether a new human mutation becomes common in a population.

  • Regulation of Eukaryotic DNA Transcription

    Regulation of Eukaryotic DNA Transcription

    Animations

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

  • Virochip DNA Microarray

    Virochip DNA Microarray

    Click & Learn

    Answer interactive questions to explore the logic of the Virochip microarray design, particularly how evolutionary relationships can be used to detect new viruses.

  • DNA Sequence Assembly

    DNA Sequence Assembly

    Click & Learn

    Learn the principles of how DNA is sequenced and assembled into whole genomes using the Sanger method, shotgun sequencing, or ultra-deep sequencing.

  • Leading-Edge Bioinformatics

    Leading-Edge Bioinformatics

    Clips

    (6 min 36 sec) Peter Skewes-Cox, and Dr. Graham Ruby, both in the DeRisi lab, explain state-of-the-art DNA sequencing and bioinformatic technologies.

  • Dengue Virus Life Cycle

    Dengue Virus Life Cycle

    Animations

    (4 min 12 sec) Dengue virus has sophisticated mechanisms for entering a cell, for replicating its RNA genome, and for translating proteins.

  • The Chemical Structure of DNA

    The Chemical Structure of DNA

    Animations

    (2 min 44 sec) DNA's chemical properties can be harnessed for a variety of biotechnology applications.

  • Polymerase chain reaction (PCR)

    Polymerase chain reaction (PCR)

    Animations

    (54 sec) PCR is a standard laboratory technique that allows amplification of specific segments of DNA based on complementarity.

  • Biodiversity and Evolutionary Trees

    Biodiversity and Evolutionary Trees

    Card Activities

    Construct evolutionary trees by sorting seashells. To accompany the lecture series Exploring Biodiversity: The Search for New Medicines and the Sorting Seashells Click and Learn interactive.

  • Bacterial Quorum Sensing

    Bacterial Quorum Sensing

    Click & Learn

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

  • Sorting Seashells

    Sorting Seashells

    Click & Learn

    Explore principles of taxonomy by sorting seashells according to their morphological characteristics and constructing an evolutionary tree.

  • The LUX operon controls light production

    The LUX operon controls light production

    Animations

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

  • HIV life cycle

    HIV life cycle

    Animations

    (4 min 52 sec) How HIV infects a cell and replicates itself using reverse transcriptase and the host's cellular machinery.

  • Protease inhibitors

    Protease inhibitors

    Animations

    (1 min 6 sec) Protease inhibitors prevent maturation of viral proteins inside HIV particles.

  • 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.

  • Genetic Switches

    Genetic Switches

    Click & Learn

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

  • Visualizing Gene-Expression Patterns

    Visualizing Gene-Expression Patterns

    Click & Learn

    Learn about the different ways scientists are able to detect when genes are being expressed in various tissues.

  • Paintbrush Gene

    Paintbrush Gene

    Animations

    (49 sec) In two related Drosophila species, a so-called paintbrush gene is activated to "paint" the pigment on the body. In one species, an extra switch activates the gene, resulting in spotted wings.

  • Pitx1 Expression

    Pitx1 Expression

    Animations

    (55 sec) In the stickleback fish, pelvic-fin reduction resulted from changes in the regulatory switch elements of the Pitx1 gene. In the marine ancestor, the Pitx1 gene is activated in the pelvic-fin region during development to generate the fin. In the pelvic-reduced stickleback, the regulatory switch that normally turns on the Pitx1 gene is either missing or non-functional.

  • 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.

Refine Results

Narrow your choices by selecting areas below.

Topics

Extended Filters