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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
    6243

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    554

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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
    3468

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    722

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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
    Science Behind the Lesson
    2003

    views

    294

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    0

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    The Science Behind Parthenogenesis: Interesting things happen when meiosis goes “wrong”
    Parthenogenetic reproduction is a fascinating, complex topic.  This article accompanies “Why Meiosis Matters: The case of the fatherless snake.” It summarizes the basic information an introductory biology or genetics instructor...

    Courses: Cell BiologyCell Biology GeneticsGenetics Introductory BiologyIntroductory Biology

    meiosismitosissex determinationAsexual reproductionParthenogenesis
    Lesson
    9293

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    1205

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    0

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    Why Meiosis Matters: The case of the fatherless snake
    A compelling reason to learn something can make all the difference in students’ motivation to learn it.  Motivation, in turn, is one of the key attitudes that drives learning.  This story presents students with a compelling puzzle of a...

    Courses: GeneticsGenetics Science Process SkillsScience Process Skills

    meiosismitosissex determinationAsexual reproductionParthenogenesis
    Lesson
    4855

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    1858

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    0

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    Teaching Genetic Linkage and Recombination through Mapping with Molecular Markers
    Most introductory genetics courses cover genetic linkage, a core concept in the CourseSource genetics learning outcome framework. Although it is a classical genetics topic, genetic linkage remains an important concept to understand in order to...

    Courses: GeneticsGenetics Plant BiologyPlant Biology Science Process SkillsScience Process Skills

    meiosisphenotypegel electrophoresismicrosatellitesBanding PatternGenetic linkageInheritanceMolecular MarkersPhysical Linkage
    Lesson
    2110

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    395

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    0

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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
    993

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    137

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    0

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    Student-Generated Analogies for Learning about Information Flow
    Using analogies is a standard practice for both teaching and communicating ideas in science. Here we upend the traditional lesson, where the instructor provides a fully constructed analogy and explains it, by having the students develop a complex...

    Courses: Biochemistry and Molecular BiologyBiochemistry and Molecular Biology Cell BiologyCell Biology GeneticsGenetics Introductory BiologyIntroductory Biology

    critical thinkingcentral dogmaanalogical reasoning
    Lesson
    1641

    views

    244

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    0

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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
    2274

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    305

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    Learning Quantitative Genetics: Investigation of Genetic Control for Cold Stress Response in Plants
    Course-embedded undergraduate research experiences (CUREs) for students have been shown to increase students’ understanding of the process of science, affirm their scientific identity, and improve retention in STEM fields. Despite many CUREs...

    Courses: GeneticsGenetics

    data analysisrecombinationplantsquantitative geneticsabiotic stress responsegenetic control of complex traitsinheritance of complex traits
    Lesson
    2272

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    351

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    0

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    Learning R for Biologists: A Mini Course Grab-Bag for Instructors
    As biology becomes more data driven, teaching students data literacy skills has become central to biology curriculum. Despite a wealth of online resources that teach researchers how to use R, there are few that offer practical laboratory-based...

    Courses: Anatomy-PhysiologyAnatomy-Physiology BioinformaticsBioinformatics EcologyEcology GeneticsGenetics

    Rdata analysisRStudio
    Essay
    582

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    72

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    Teaching about fatherless snakes in a prison classroom
    Developing a course for the first time as a graduate student is challenging. When I first taught introductory biology with the Cornell Prison Education Program, I struggled to design and adapt lessons that felt relevant to my students....

    Courses: GeneticsGenetics Introductory BiologyIntroductory Biology

    meiosismitosisReproduction
    Lesson
    427

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    63

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    The Science and Ethics of Gene Drives: An Active Learning Lesson in Genetics
    Coursework connecting biology to socially relevant issues and ethical questions can help students think about biology in interdisciplinary terms. Gene drives represent one topic involving both advanced biology concepts and societally relevant...

    Courses: GeneticsGenetics

    bioethicsCRISPR/Cas9Genetic modificationGene drives
    Science Behind the Lesson
    654

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    58

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    X-ploring Fragile X: The Science Behind the Syndrome
    Fragile X Syndrome is an X-linked genetic disorder resulting from the impairment of transcription of the FMR1 gene, producing less to no FMRP protein. FMRP is a translational inhibitor that plays a key role in neurological development. Recent...

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

    epigeneticsgene regulationtranscriptioncentral dogmatranslationFragile X syndromeSphingosine Metabolism
    Teaching Tools and Strategies
    1337

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    49

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    Using Constructed Response Questions on High-Stakes Assessments in Large Classes With Limited Support
    Large lecture courses often rely heavily, and sometimes exclusively, on Multiple Choice (MC) exams to assess student learning. Constructed Response (CR) questions, in which students generate their own answers, can provide more insight into student...

    Courses: GeneticsGenetics

    assessmenttestexamLarge classconstructed responseshort answerscoring
    Lesson
    2044

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    890

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    Exploration of the Human Genome by Investigation of Personalized SNPs
    Students often shy away from tedious bioinformatics approaches to exploring their genomes. However, in our expanding digital world these skills are some of the most relevant and valuable. To increase students' interest in their own genomes, I...

    Courses: BioinformaticsBioinformatics GeneticsGenetics Science Process SkillsScience Process Skills

    UCSC genome browsersingle nucleotide polymorphismGenome wide association studiesGenomic organization
    Lesson
    1903

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    474

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    Why do Some People Inherit a Predisposition to Cancer? A small group activity on cancer genetics
    Before undergraduate students take a genetics course they generally know cancer has a genetic basis and involves the proliferation of cells; however, many are uncertain about why only a subset of people have a predisposition to cancer and how that...

    Courses: GeneticsGenetics Science Process SkillsScience Process Skills

    cancerInheritance patternsProbability calculationProto-oncogeneTumor Suppressor Gene
    Lesson
    2987

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    346

    downloads

    0

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    A Muscular Dystrophy Case Study Illustrating the Phenotypic Effects of Mutation
    Mutations in genes can lead to a variety of phenotypes, including various human diseases. Students often understand that a particular mutation in a single gene causes a disease phenotype, but it is more challenging to illustrate complex genetic...

    Courses: Developmental BiologyDevelopmental Biology GeneticsGenetics

    mutationProtein Structureethicscentral dogmahuman disease
    Lesson
    3041

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    515

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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
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    342

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    Cutthroat trout in Colorado: A case study connecting evolution and conservation
    Evaluation of evidence is a key process skill for the core competencies of applying the process of science and using quantitative reasoning. This case study enables upper-division biology students to practice these skills by applying evolutionary...

    Courses: EvolutionEvolution GeneticsGenetics Science Process SkillsScience Process Skills

    population geneticsphylogeneticsSpeciationdivergencegene flow