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    Discovering Prokaryotic Gene Regulation by Building and Investigating a Computational Model of the lac Operon
    The ability to construct and reason through a biological system is an important skill to develop in science education. This level of understanding forces students to recognize the interrelatedness of components within a biological process and...

    Courses: Introductory BiologyIntroductory Biology

    prokaryotesgene regulationLac Operoninducible operon
    Lesson
    3075

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    453

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    0

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    Moths and Frogs and E. coli, Oh My!: Agent-based Modeling of Evolutionary Systems
    In evolution classrooms, introducing and reinforcing the idea of genetic drift and random selection can be challenging, as can be reinforcing appropriate mental models of evolution. Agent-based models offer students the opportunity to conduct a...

    Courses: BioinformaticsBioinformatics EcologyEcology EvolutionEvolution Science Process SkillsScience Process Skills

    modelingEvolutionecologyagent-based modelingGenetic Driftenvironmental scienceNatural Selectioncompetitive coevolutionsimulation modelingevolutionary reasoning
    Lesson
    4243

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    409

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    Discovering Prokaryotic Gene Regulation with Simulations of the trp Operon
    The trp operon exemplifies important biological concepts, including the central dogma of molecular biology, feedback inhibition, and gene regulation. For this reason, regulation of the trp operon is a common theme in introductory biology,...

    Courses: GeneticsGenetics Introductory BiologyIntroductory Biology MicrobiologyMicrobiology

    prokaryotesgene regulationattenuationfeedback inhibitionrepressible operontrp operon
    Lesson
    1151

    views

    165

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    0

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    Using Musical Instruments to Model Negative Feedback in the Hypothalamo-Pituitary-Target Gland Axes
    Homeostasis and negative feedback are crucial, yet difficult, concepts for undergraduates, particularly in the context of the hypothalamo-pituitary axes. This interactive activity was designed to (1) reveal how negative feedback can restore...

    Courses: Anatomy-PhysiologyAnatomy-Physiology

    cell-cell communicationhomeostasisnegative feedback
    Lesson
    4467

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    448

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    1

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    Teaching Advanced Concepts in Regulation of the Lac Operon With Modeling and Simulation
    Success in biochemistry and other life science courses requires that students understand important biological concepts. One of these concepts is how gene regulation ensures that homeostasis is maintained in an organism. The lac operon is a...

    Courses: Biochemistry and Molecular BiologyBiochemistry and Molecular Biology

    gene regulationinducible operonProkaryotic cellPhosphoenolpyruvate transferase system (PTS)
    Lesson
    1482

    views

    158

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    0

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    Infectious Chocolate Joy with a Side of Poissonian Statistics: An activity connecting life science students with subtle physics concepts
    Introductory physics courses are required for many programs in the life sciences, yet traditional curricula fail to help students meaningfully connect physical concepts with biological systems.  In this lesson, we describe an activity taught...

    Courses: BioinformaticsBioinformatics MicrobiologyMicrobiology Science Process SkillsScience Process Skills

    quantitative biologyHIVmultiplicity of infectionPoisson DistributionPhysics for biologists
    Lesson
    2104

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    544

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    0

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    Using computational molecular modeling software to demonstrate how DNA mutations cause phenotypes
    Students require a deep understanding of the central dogma before they can understand complex topics such as evolution and biochemical disorders. However, getting undergraduate biology students to apply higher-order thinking skills to the central...

    Courses: BioinformaticsBioinformatics GeneticsGenetics Science Process SkillsScience Process Skills

    Protein Structurecomputational modelingcentral dogmaplant leaf structurePhenotype/Genotype
    Lesson
    1250

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    182

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    0

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    Simulating Cortical Rotation, Axis Induction, and Experimental Embryology in Amphibian Embryos Using Clay Models
    The study of development requires learners to understand spatially complex concepts like embryo anatomy. Embryo anatomy is dynamic over time, and it is often manipulated by researchers in experiments that are fundamental to the field. This spatial...

    Courses: Developmental BiologyDevelopmental Biology

    developmentXenopusfertilizationEmbryologyinductionSymmetry breakingOrganizerCortical rotationPatterning
    Lesson
    1289

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    352

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    0

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    A first lesson in mathematical modeling for biologists: Rocs
    Using a fictitious population of Rocs, a mythical species of giant raptor, students accomplish two broad objectives: 1) they undertake the process of building a first mathematical model of a population, and 2) they begin to develop their...

    Courses: EcologyEcology Introductory BiologyIntroductory Biology Science Process SkillsScience Process Skills

    population ecologypopulation modelingdiscrete generationpopulation management
    Lesson
    924

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    275

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    0

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    Population Ecology of the Northern Spotted Owl
    The mathematical modeling of populations utilizing field-collected demographic data is an important component of lab curricula in a variety of undergraduate biology lab courses. During the global pandemic brought about by the SARS-CoV-2 virus in...

    Courses: EcologyEcology Introductory BiologyIntroductory Biology

    demographyCommunity Ecologypopulation ecologyconservation biologylife tables
    Lesson
    2818

    views

    683

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    0

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    The Case of the Missing Strawberries: RFLP analysis
    While solving the fictional mystery of the missing strawberries, students are engaged in a guided-inquiry lesson featuring small-group and class discussions, hands-on activities, and laboratory exercises related to molecular genotyping by...

    Courses: GeneticsGenetics Science Process SkillsScience Process Skills

    process of scienceDNAforensicsgel electrophoresisMolecular genotypingRestriction endonucleaseRestriction enzymeRestriction fragment length polymorphismRFLP
    Lesson
    1501

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    528

    downloads

    0

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    Building a Model of Tumorigenesis: A small group activity for a cancer biology/cell biology course
    The multistep nature of tumorigenesis is a foundational concept in the context of Cancer Biology. Many students do not appreciate the complex nature of cancer development nor do they understand how scientists are able to unravel the molecular...

    Courses: Cell BiologyCell Biology GeneticsGenetics Science Process SkillsScience Process Skills

    pathwayscancerMolecular AlterationsRetrospective dataTumorigenesis
    Lesson
    6527

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    1120

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    Mapping a Mutation to its Gene: The "Fly Lab" as a Modern Research Experience
    Although genetics is an invaluable part of the undergraduate biology curriculum, it can be intimidating to students as well as instructors: Students must reduce their reliance on memorization and dive deep into quantitative analysis, and...

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

    geneticsbioinformaticsdrosophilachi-square analysiscomplementation mappingmode of inheritancethree-point mapping
    Teaching Tools and Strategies
    2457

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    106

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    0

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    How to Design a Classroom Activity that Integrates 3D Print Models with Active Learning
    Student exploration of relevant physical models can deepen knowledge of course material. In this guide we describe a method by which instructors can integrate 3D printing technology with an established teaching strategy, the classroom jigsaw, to...

    Courses: Introductory BiologyIntroductory Biology

    active learning3D print modelsclassroom jigsaw
    Lesson
    3471

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    725

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    0

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    Homologous chromosomes? Exploring human sex chromosomes, sex determination and sex reversal using bioinformatics approaches
    Constructing a robust understanding of homologous chromosomes, sex chromosomes, and the particulate nature of genes is a notoriously difficult task for undergraduate biology students. In this lesson, students expand their knowledge of human...

    Courses: BioinformaticsBioinformatics GeneticsGenetics Introductory BiologyIntroductory Biology Science Process SkillsScience Process Skills

    bioinformaticsautosomehomologous chromosomeshomologous recombinationsex chromosomesex determinationsex reversal mutations
    Teaching Tools and Strategies
    1288

    views

    299

    downloads

    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
    5035

    views

    910

    downloads

    0

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    Tackling "Big Data" with Biology Undergrads: A Simple RNA-seq Data Analysis Tutorial Using Galaxy
    Analyzing high-throughput DNA sequence data is a fundamental skill in modern biology. However, real and perceived barriers such as massive file sizes, substantial computational requirements, and lack of instructor background knowledge can...

    Courses: Biochemistry and Molecular BiologyBiochemistry and Molecular Biology BioinformaticsBioinformatics

    bioinformaticsDNA sequenceRNAseqgene expression
    Lesson
    6257

    views

    554

    downloads

    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
    4909

    views

    495

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    0

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    Does Organelle Shape Matter?: Exploring Patterns in Cell Shape and Structure with High-Throughput (HT) Imaging
    Organelle structure has been studied and visualized for decades; however, publicly available databases that use improved high-throughput microscopy of gene-edited cell lines have recently revolutionized the amount and quality of information now...

    Courses: Biochemistry and Molecular BiologyBiochemistry and Molecular Biology BioinformaticsBioinformatics Cell BiologyCell Biology GeneticsGenetics Science Process SkillsScience Process Skills

    modelingcase studymicroscopystructureOrganellesHigh-throughput (HT)Endoplasmic Reticulum (ER)Fluorescent microscopyHuman Cell Biology
    Lesson
    5651

    views

    1168

    downloads

    3

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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