CourseSource: Resources

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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: Genetics Plant Biology Science Process Skills

meiosisphenotypegel electrophoresismicrosatellitesBanding PatternGenetic linkageInheritanceMolecular MarkersPhysical Linkage

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)...

Courses: Anatomy-Physiology Genetics

protein structure and functionhuman genetic variationskeletal muscle physiology

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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...

Courses: Genetics Science Process Skills

process of scienceDNAforensicsgel electrophoresisMolecular genotypingRestriction endonucleaseRestriction enzymeRestriction fragment length polymorphismRFLP

Teaching Tools and Strategies

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Converting a Face-to-Face Lab to Online: An Example of Process and Outcomes for a CRISPR-Based Molecular Biology Lab

The COVID-19 pandemic created a need to convert in-person laboratory courses into an online format in a short amount of time. For this reason, we converted our face-to-face molecular biology lab course to an online version in Spring 2020. The lab...

Courses: Genetics Science Process Skills

mutationtranscriptioncrisprtranslation

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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...

Courses: Science Process Skills

biasprocess of sciencemetacognitionConfirmation BiasCognitive Bias

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1911

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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: Genetics Science Process Skills

cancerInheritance patternsProbability calculationProto-oncogeneTumor Suppressor Gene

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Assessing Urban Biodiversity With the eBird Citizen Science Project: A Course-Based Undergraduate Research Experience (CURE) Module

The eBird citizen science module takes advantage of technology tools and online resources developed by the Cornell Laboratory of Ornithology (http://ebird.org) to achieve several learning objectives embedded in a semester-long upper-level biology...

Courses: Ecology Ecology Science Process Skills

datacitizen sciencecommunityBiodiversitySpecieshypothesishabitat

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475

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A Lesson on Matter and Energy at the Organismal Scale: Linking Patterns and Processes Across Diverse Taxa

Pathways and transformations of energy and matter (PTEM) are a conceptually challenging but essential component of biological literacy. Curricular gaps about PTEM nevertheless remain; although lessons targeting PTEM at small scales (chemical,...

Courses: Ecology Ecology Introductory Biology

plantsenergyAnimalsfungimatterorganismal scale

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Population Ecology of the Northern Spotted Owl

The mathematical modeling of populations utilizing field-collected demographic data is an important component of lab curricula in a variety of undergraduate biology lab courses. During the global pandemic brought about by the SARS-CoV-2 virus in...

Courses: Ecology Ecology Introductory Biology

demographyCommunity Ecologypopulation ecologyconservation biologylife tables

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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...

Courses: Developmental Biology

gene expressionXenopusearly developmentembryofertilizationin situ hybridization

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A Quick and Simple Natural Selection Role Play

Teaching evolution remains a challenging task in biology education. Students enter the classroom with stubborn misconceptions and many traditional examples of the process of evolution may not resonate with students. This short role play activity...

Courses: Ecology Ecology Evolution Genetics Plant Biology

EvolutionfitnessNatural Selectionheritability

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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: Evolution Genetics Science Process Skills

population geneticsphylogeneticsSpeciationdivergencegene flow

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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...

Courses: Biochemistry and Molecular Biology Genetics Introductory Biology

mutationtranscriptiongene expressioncentral dogmatranslationgel electrophoresisGenotype/Phenotype

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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...

Courses: Genetics Introductory Biology Plant Biology

case studyGenetic ModificationsBiochemistry of Flower ColorGMO regulationsGenotype-Phenotype Connections

Science Behind the Lesson

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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 Biology Genetics Introductory Biology

epigeneticsgene regulationtranscriptioncentral dogmatranslationFragile X syndromeSphingosine Metabolism

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Mapping a Mutation to its Gene: The "Fly Lab" as a Modern Research Experience

Although genetics is an invaluable part of the undergraduate biology curriculum, it can be intimidating to students as well as instructors: Students must reduce their reliance on memorization and dive deep into quantitative analysis, and...

Courses: Biochemistry and Molecular Biology Bioinformatics Genetics Science Process Skills

geneticsbioinformaticsdrosophilachi-square analysiscomplementation mappingmode of inheritancethree-point mapping

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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...

Courses: Ecology Ecology Genetics Introductory Biology Science Process Skills

EvolutionconservationGenetic DriftSpeciationNatural SelectionBiological species conceptgene flowMorphological species conceptPhylogenetic species concept

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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: Microbiology

phylogeneticsTree thinkingparaphyly

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Tackling "Big Data" with Biology Undergrads: A Simple RNA-seq Data Analysis Tutorial Using Galaxy

Analyzing high-throughput DNA sequence data is a fundamental skill in modern biology. However, real and perceived barriers such as massive file sizes, substantial computational requirements, and lack of instructor background knowledge can...

Courses: Biochemistry and Molecular Biology Bioinformatics

bioinformaticsDNA sequenceRNAseqgene expression

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...

Courses: Introductory Biology

foundational knowledgegraphical interpretationtechnical terms