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    Exploring the Lytic and Lysogenic Life Cycles of Bacteriophages
    The goal of this lesson is to introduce students to the lytic and lysogenic cycles of T4 and lambda bacteriophages, respectively, using student-centered pedagogies. Bacteriophages are viruses that infect bacteria and are either virulent or...

    Courses: MicrobiologyMicrobiology

    Lesson
    5361

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    924

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    A clicker-based case study that untangles student thinking about the processes in the central dogma
    The central dogma of biology is a foundational concept that provides a scaffold to understand how genetic information flows in biological systems. Despite its importance, undergraduate students often poorly understand central dogma processes (DNA...
    Teaching Tools and Strategies
    2022

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    196

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    An Interactive Protocol for In-Classroom DNA Extraction
    Using commonly available materials, this tool allows students to extract DNA, exploring DNA chemistry and the principles of experimental design and execution. We take a “Choose Your Own Adventure” approach encouraging students to...
    Lesson
    2647

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    633

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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...
    Lesson
    4630

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    1147

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    1

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    Teaching the Central Dogma Using a Case Study of Genetic Variation in Cystic Fibrosis
    The central dogma of biology is a foundational concept that is traditionally included in genetics curricula at all academic levels. Despite its ubiquitous presence throughout genetics education, students persistently struggle with both the...

    Courses: GeneticsGenetics

    Lesson
    3623

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    1210

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    My Dog IS My Homework: Exploring Canine Genetics to Understand Genotype-Phenotype Relationships
    To facilitate understanding of the fundamental genetic concept of the genotype-phenotype relationship in our introductory biology students, we designed an engaging multi-week series of related lessons about canine genetics in which students...
    Lesson
    5957

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    503

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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...
    Lesson
    2978

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    462

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    Targeting Misconceptions in the Central Dogma by Examining Viral Infection
    Understanding the central dogma and how changes in gene expression can impact cell function requires integration of several topics in molecular biology. Students often do not make the necessary connections between DNA structure, transcription,...
    Lesson
    5428

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    1107

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    2

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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...
    Lesson
    1936

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    366

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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...
    Lesson
    2254

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    280

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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...
    Lesson
    1976

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    526

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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...
    Teaching Tools and Strategies
    1177

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    28

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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

    Lesson
    5980

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    3878

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    CURE-all: Large Scale Implementation of Authentic DNA Barcoding Research into First-Year Biology Curriculum
    Growing calls in science education reform have emphasized wide-scale engagement of first-year undergraduate students in authentic research experiences; however, large course enrollments, inadequate student experience, limited resources and...
    Lesson
    3297

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    690

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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...
    Lesson
    2110

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    439

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    Antibiotic Resistance Genes Detection in Environmental Samples
    Our aim is to provide an authentic research experience for undergraduate students in a variety of biology courses through collaboration between a four-year university and a community college. This lab series teaches transferable and universal...
    Lesson
    3169

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    603

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    Predicting and classifying effects of insertion and deletion mutations on protein coding regions
    Mutations in genes can affect the encoded proteins in multiple ways, and some of these effects are counterintuitive. As for any other knowledge, students must create their own deep understanding of the Central Dogma. Students may not develop this...
    Lesson
    3175

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    1129

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    CRISPR/Cas9 in yeast: a multi-week laboratory exercise for undergraduate students
    Providing undergraduate life-science students with a course-based research experience that utilizes cutting-edge technology, is tractable for students, and is manageable as an instructor is a challenge. Here, I describe a multi-week lesson plan...
    Teaching Tools and Strategies
    2085

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    339

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    DNA Detective: Genotype to Phenotype. A Bioinformatics Workshop for Middle School to College.
    Advances in high-throughput techniques have resulted in a rising demand for scientists with basic bioinformatics skills as well as workshops and curricula that teach students bioinformatics concepts. DNA Detective is a workshop we designed to...
    Lesson
    2018

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    640

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    Sequence Similarity: An inquiry based and "under the hood" approach for incorporating molecular sequence alignment in introductory undergraduate biology courses
    Introductory bioinformatics exercises often walk students through the use of computational tools, but often provide little understanding of what a computational tool does "under the hood." A solid understanding of how a bioinformatics...