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    Lesson
    2006

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    260

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    You and Your Oral Microflora: Introducing non-biology majors to their “forgotten organ”
    With limited time available for laboratory activities, introductory science courses for non-science majors typically use the laboratory period to reinforce material that was previously presented during lecture. This practice was true of a human...
    bacteriamicrobiomeBLASTmicrobesDNA replicationPolymerase chain reaction (PCR)
    Lesson
    2320

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    592

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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...
    process of scienceDNAforensicsgel electrophoresisMolecular genotypingRestriction endonucleaseRestriction enzymeRestriction fragment length polymorphismRFLP
    Lesson
    1387

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    432

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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 years has made this model of teaching...
    meiosisReproductionAneuploidyGameteNon-disjunctionOocyteSpermTrisomy
    Lesson
    1553

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    285

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    Modeling the Research Process: Authentic human physiology research in a large non-majors course
    Laboratory experiences in large-enrollment introductory science courses often utilize “cookie-cutter style” laboratory experiences due to the relative simplicity of setting up the lab stations, as well as a need to teach students...
    data analysishypothesis testingexperimental designphysiology
    Lesson
    1473

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    302

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    Plotting Cranial and Spinal Nerve Pathways in a Human Anatomy Lab
    Hands-on experiences with cadavers, animal dissections, or plastic models are effective at improving student learning and attitudes in human anatomy courses. The hands-on experience allows students to visualize and experiment with anatomical...
    human anatomyNervous systemBrainCranial nerveNerveSpinal cordSpinal nerve
    Lesson
    2951

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    641

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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...
    bioinformaticsautosomehomologous chromosomeshomologous recombinationsex chromosomesex determinationsex reversal mutations
    Lesson
    1622

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    397

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    Does it pose a threat? Investigating the impact of Bt corn on monarch butterflies
    Aspiring scientists know that a hallmark of science is that experiments are repeatable and testable.  However, students do not often get opportunities to explore the replicability of science.  Using a current “hot topic” of...
    ecologyCommunity EcologyBt cornGenetic modificationMonarch butterflies
    Lesson
    2543

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    852

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    Coevolution or not? Crossbills, squirrels and pinecones
    This case reinforces the concept of coevolution as a reciprocal change in genetic structure between or among two or more populations, by having students analyze and interpret data, build a descriptive model of the system, and use data to make...
    fitnessCoevolutionCo-adaptation
    Lesson
    8493

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    1105

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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...
    meiosismitosissex determinationAsexual reproductionParthenogenesis