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    Mitosis and Meiosis Resources
    New stop-motion ‘candymation’ videos of mitosis and meiosis, plus Instructor Guides and problem sets.

    Keywords: meiosislearningmitosisanimationscell division mechanismschromosomes

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    Stem Cells in Planaria Regeneration and Wound Healing
    Discussion questions to help guide students examining a graph of number of mitoses vs time for planaria injured or had amputations of their tails.

    Keywords: Stem cellsregenerationplanaria

    1664

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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...

    Keywords: meiosismitosissex determinationAsexual reproductionParthenogenesis

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    Cell ploidy made simple: Resources for students and instructors
    The concept of cell ploidy can be challenging for students to grasp. This resource includes a short, informal instructional video and a worksheet/set of clicker questions combo that allows students...

    Keywords: meiosismitosis1n2nploidyhaploiddiploid

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    Mitotic Index and Cell Division
    This module introduces the mitotic index in the context of understanding the dynamics of cell division in the root of a plant. It is intended for an introductory biology audience.

    Keywords: RatiosCell StructureCell GrowthchartCell DivisionMitotic Index

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    Doubling Time of Tumors
    This module introduces the calculation of potential doubling time of tumorous cells in the context of understanding the growth of a population of the cells. It is intended for an introductory...

    Keywords: linear regressionRatiosCell StructureOpenStaxCell Growth

    915

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    167

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    Using Immunocytochemistry and Fluorescence Microscopy Imaging to Explore the Mechanism of Action of Anti-Cancer Drugs on the Cell Cycle
    Understanding and visualizing the cell cycle and mitosis is an essential concept of cell biology. This multi-week lab module has students investigate the mechanism of action of anti-cancer drugs...

    Keywords: fluorescence microscopymitosisCell StructureCell ImagingImmunocytochemistryQuantitative microscopySTEM skills

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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...

    Keywords: meiosismitosisReproduction

    467

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    63

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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...

    Keywords: meiosismitosissex determinationAsexual reproductionParthenogenesis

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    214

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    A virtual laboratory on cell division using a publicly-available image database
    Cell division is a key concept in cell biology. While there are many popular activities to teach students the stages of mitosis, most make use of simple schematics, cartoons, or textbook diagrams....

    Keywords: image analysismicroscopymitosisCellular Processes

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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...

    Keywords: meiosischiasma formationchromosome recombination

    5764

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    Understanding the Importance of Microtubules in Normal Cell Division: Chemotherapy Connection
    In introductory courses, students learn about microtubules as important structures but may not engage in a hands-on experience to localize microtubules themselves or to learn about their connection...

    Keywords: cancerCell DivisionimmunofluorescenceMicrotubulesAntibodies

    873

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    Learning Frameworks Aid Goal-oriented Course Design
    As a new instructor it can be hard to know where to begin. Thankfully, CourseSource's learning frameworks (https://www.coursesource.org/courses) shaped my approach to teaching as a first year...

    Keywords: backward designlearning goalscourse design

    486

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    66

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    A simple way for students to visualize cellular respiration: adapting the board game MousetrapTM to model complexity
    Lecture-based introductory biology courses are typically content-heavy as instructors strive to provide students with foundational knowledge in a broad range of topics.  One topic...

    Keywords: ATPGlycolysisCellular RespirationElectron Transport ChainKrebs Cycle

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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...

    Keywords: recombinationmeiosisDNA sequenceCrossingoverchromosome structureHolliday junctionhomology

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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...

    Keywords: bioinformaticsautosomehomologous chromosomeshomologous recombinationsex chromosomesex determinationsex reversal mutations

    3142

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    647

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    Real World Scenarios in Non-Majors Biology
    Students in non-majors’ biology courses may not choose careers that require biology content knowledge; however, all will encounter science in their lives. We redesigned a non-majors...

    Keywords: geneticsVaccinesScientific ProcessGMOsviruses

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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...

    Keywords: modelingcase studymicroscopystructureOrganellesHigh-throughput (HT)Endoplasmic Reticulum (ER)Fluorescent microscopyHuman Cell Biology

    4504

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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...

    Keywords: cancerInheritance patternsProbability calculationProto-oncogeneTumor Suppressor Gene

    1697

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    Sex-specific differences in Meiosis: Real-world applications
    In traditional classrooms, students are typically presented with facts that they are asked to memorize and recall during an exam.  The rapid explosion of available scientific facts in recent...

    Keywords: meiosisReproductionAneuploidyGameteNon-disjunctionOocyteSpermTrisomy

    1495

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    446

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