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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...
    Science Behind the Lesson
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    The Science Behind the ACTN3 Polymorphism
    A common polymorphism in the alpha-actinin-3 (ACTN3) gene results in the lack of ACTN3 protein expression in fast twitch muscle fibers in ~16% of the human population (1). This genetic change has been linked with muscle performance in humans (2)...
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    A Classroom Intervention to Reduce Confirmation Bias
    STEM students are often unable to recognize cognitive bias in their own disciplines, and simply describing cognitive bias to students has shown to be insufficient to improve critical thinking. However, habitual metacognitive techniques show...
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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...
    Lesson
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    Differential Gene Expression during Xenopus laevis Development
    In Developmental Biology classes, students are challenged with understanding how differential gene expression guides embryonic development. It can be difficult for students to realize that genes need to be turned on or off at the right time and...
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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...
    Lesson
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    Garden Variety Mutations: Using Primary Data to Understand the Central Dogma in Large-Lecture Introductory Biology
    The ability to interpret and create an argument from data is a crucial skill for budding scientists, yet one that is seldom practiced in introductory courses. During this argumentation module, students in a large lecture class will work in groups...
    Lesson
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    The Great Petunia Carnage of 2017: A Clicker Case Study Using Petunias to Describe the Effect of Genetic Modification on the Biochemistry of Flower Color and Phenotype in Plants
    In this single class period case study, students examine the difference between genotype and phenotype by studying the mechanisms by which commercially available petunias have been bred to have different phenotypes (flower colors). Students review...
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    What is Speciation, How Does It Occur, and Why Is It Important for Conservation?
    Speciation provides a framework for classifying biodiversity on Earth and is a central concept in evolutionary biology. To help undergraduate students learn about speciation, we designed a student-centered lesson that uses active-learning...
    Lesson
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    Forensic Phylogenetics: Implementing Tree-thinking in a Court of Law
    Here we describe an in-class activity developed for Evolutionary Biology and Biodiversity (BioEE1780) at Cornell University, an introductory course required of all biology majors. This activity offers instructors an engaging and real-life...

    Courses: MicrobiologyMicrobiology

    Teaching Tools and Strategies
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    In-class peer grading of daily quizzes increases feedback opportunities
    Educators are familiar with evidence of the benefit that frequent and immediate feedback provides to our students, regardless of class size. We also often find ourselves in a situation where we do not have enough time planned or TA support...
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    A Hands-on Introduction to Hidden Markov Models
    In this Lesson, we describe a classroom activity that demonstrates how a Hidden Markov Model (HMM) is applied to predict a eukaryotic gene, focusing on predicting one exon-intron boundary. This HMM lesson is part of the BIOL/CS 370...
    Lesson
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    The ACTN3 Polymorphism: Applications in Genetics and Physiology Teaching Laboratories
    Inquiry-based undergraduate laboratories provide the opportunity to engage students in a research experience that improves scientific thinking, but such activities can be difficult to develop and implement due to limited time and resources. We...
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    Helping Students to Metacognitively Read Scientific Literature With Talking to the Text
    Reading primary scientific literature enhances students’ understanding of material, increases their self-efficacy, and critical thinking skills. However, scientific articles often present multiple challenges to the students, the first among...
    Lesson
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    Fragile States: A Case Study Exploring Genetics, Molecular Biology, and Biochemistry Through the Lens of Fragile X Syndrome
    This case aims to strengthen students’ understanding of molecular biology concepts through study of Fragile X Syndrome (FXS). Students begin by learning the cause and phenotypes of FXS and related conditions. Students then apply genetics...
    Lesson
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    How Do Kidneys Make Urine From Blood? Qualitative and Quantitative Approaches to Filtration, Secretion, Reabsorption, and Excretion
    The function of the kidneys is to help maintain a constant internal environment (homeostasis) by regulating the volume and chemical composition of the blood. This regulation occurs via three fundamental processes: filtration, secretion, and...
    Lesson
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    Taking the Hassle out of Hasselbalch
    Mention pH in a classroom and you can almost see the inner yawn on the faces of your students. The definition may even roll easily from their lips. However, despite multiple exposures to the relationship of pH and pKa throughout a typical...
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    Generating Biological Hypotheses in a "Course-based Undergraduate Research Experience"(CURE) Course
    Hypotheses are often incorrectly defined as educated guesses or if/then statements. Further confusion arises from the fact that not all disciplines define hypotheses similarly. The difficulty in distinguishing between statistical and biological...
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    Authentic Ecological Inquiries Using BearCam Archives
    Learning through authentic scientific inquiries is essential for understanding the nature and process of science and for developing critical thinking and communication skills. It is logistically challenging, however, to offer experiences of...
    Lesson
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    Exploring Indigenous Viewpoints in the Undergraduate Biology Classroom: An Environmental Case Study Incorporating Hawaiian Traditional Ecological Knowledge
    Changing science education to foster greater equity and inclusion for Indigenous students will require effort from instructors and institutions. Instructors can help by including Traditional Ecological Knowledge (TEK) in their science classrooms....