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    Integrating Manipulatives and Animations to Visualize Holliday Junctions
    The complex molecular architecture of Holliday junctions is often challenging for undergraduate biochemistry students to conceptualize. In particular, they have difficulty translating from two-dimensional, linear representations shown in textbooks...

    Courses: Biochemistry and Molecular BiologyBiochemistry and Molecular Biology GeneticsGenetics

    dna structureDNA damageDNA recombinationGene crossoverHolliday junction
    Lesson
    1536

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    216

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    Make It Stick: Teaching Gene Targeting with Ribbons and Fasteners
    Manipulating gene expression is a commonly used tool to study the effect of a single gene or the hierarchy of gene networks in many different biological disciplines. When working with mice, the most commonly used techniques to manipulate genes...

    Courses: Developmental BiologyDevelopmental Biology GeneticsGenetics

    mathematical modelhomologous recombinationCre/loxgene targeting
    Lesson
    5426

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    1107

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    2

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    Meiosis: A Play in Three Acts, Starring DNA Sequence
    Meiosis is well known for being a sticky topic that appears repeatedly in biology curricula. We observe that a typical undergraduate biology major cannot correctly identify haploid and diploid cells or explain how and why chromosomes pair before...

    Courses: Cell BiologyCell Biology GeneticsGenetics Introductory BiologyIntroductory Biology

    recombinationmeiosisDNA sequenceCrossingoverchromosome structureHolliday junctionhomology
    Lesson
    3281

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    814

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    Furry with a chance of evolution: Exploring genetic drift with tuco-tucos
    Genetic drift is an important mechanism of evolution, yet undergraduates often fail to understand how it leads to evolutionary change due in part to its random nature. This lesson plan describes a simulation-based activity that allows students to...

    Courses: EvolutionEvolution

    EvolutionGenetic DriftBottle neckFounder effectRandom evolutionary processes
    Teaching Tools and Strategies
    1149

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    242

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    0

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    Sanger Sequencing by Hand: Using Paper Clips to Demonstrate Chain Termination
    Sanger sequencing is commonly taught with a hands-on approach. Sanger sequencing involves chain termination by dideoxynucleotides, because they are missing the oxygen on the 3’ carbon atom, which is required for the addition of subsequent...

    Courses: GeneticsGenetics

    nucleotidessequencingDNAgel electrophoresisChain Termination
    Lesson
    2830

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    487

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    A Kinesthetic Modeling Activity to Teach PCR Fundamentals
    Most molecular biology and biological sciences students understand that the polymerase chain reaction (PCR) is used to amplify DNA. However, we have found that some students experience conceptual misunderstandings, a lack of detailed comprehension...

    Courses: GeneticsGenetics Science Process SkillsScience Process Skills

    PCR
    Lesson
    1696

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    579

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    A Close-Up Look at PCR
    The Polymerase Chain Reaction (PCR) is a fundamental laboratory technique that allows for the amplification of many copies of a desired DNA target sequence. Despite its prevalence, undergraduate students often have poor comprehension about the...

    Courses: Biochemistry and Molecular BiologyBiochemistry and Molecular Biology GeneticsGenetics Introductory BiologyIntroductory Biology Science Process SkillsScience Process Skills

    PCRDNA replication
    Lesson
    5956

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    502

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    2

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    Meiosis Remodeled: Inclusion of New Parts to Poppit Bead Models Enhances Understanding of Meiosis
    A long-standing tradition uses strings of poppit beads of different colors to model meiosis, especially to show how segments of paired homologous chromosomes are recombined. Our use of orthodontic latex bands to model cohesion of sister...

    Courses: Cell BiologyCell Biology GeneticsGenetics Introductory BiologyIntroductory Biology

    meiosischiasma formationchromosome recombination
    Lesson
    2018

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    639

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    1

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    Sequence Similarity: An inquiry based and "under the hood" approach for incorporating molecular sequence alignment in introductory undergraduate biology courses
    Introductory bioinformatics exercises often walk students through the use of computational tools, but often provide little understanding of what a computational tool does "under the hood." A solid understanding of how a bioinformatics...

    Courses: Biochemistry and Molecular BiologyBiochemistry and Molecular Biology BioinformaticsBioinformatics Introductory BiologyIntroductory Biology

    BLASTmultiple sequence alignmentsequence similarityphylogramZika virusAlgorithmScoring Matrix
    Lesson
    3468

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    770

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    0

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    Breaking Bricks: A Hands-On Model of Enzyme Kinetics and Inhibition
    Enzyme kinetics and the impacts of inhibitors on the enzyme's maximal velocity and ability to bind substrates are important topics in cell biology and biochemistry. However, these topics can be difficult for students to grasp when instructed...

    Courses: Biochemistry and Molecular BiologyBiochemistry and Molecular Biology Cell BiologyCell Biology

    kineticsEnzymecompetitive inhibition