CourseSource: Resources

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Fruit Fly Genetics in a Day: A Guided Exploration to Help Many Large Sections of Beginning Students Uncover the Secrets of Sex-linked Inheritance

Moving beyond the basic concepts of autosomal Mendelian inheritance to sex-linkage can be difficult for introductory biology students. Although crosses with Drosophila fruit flies have long been a mainstay of genetics units that teach these...

Courses: Genetics

Mendelian Geneticsfruit fly biologysex-linked inheritance

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3345

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695

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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...

Courses: Bioinformatics Genetics Introductory Biology Science Process Skills

bioinformaticsautosomehomologous chromosomeshomologous recombinationsex chromosomesex determinationsex reversal mutations

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1804

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449

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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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2878

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A Muscular Dystrophy Case Study Illustrating the Phenotypic Effects of Mutation

Mutations in genes can lead to a variety of phenotypes, including various human diseases. Students often understand that a particular mutation in a single gene causes a disease phenotype, but it is more challenging to illustrate complex genetic...

Courses: Developmental Biology Genetics

mutationProtein Structureethicscentral dogmahuman disease

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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...

Courses: Biochemistry and Molecular Biology Genetics

gene regulationtranscriptiontranslationFragile X syndrometriplet repeat expansionsex linkagemetabolic pathway

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1610

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471

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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...

Courses: Cell Biology Genetics Science Process Skills

meiosisReproductionAneuploidyGameteNon-disjunctionOocyteSpermTrisomy

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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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287

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The Science and Ethics of Gene Drives: An Active Learning Lesson in Genetics

Coursework connecting biology to socially relevant issues and ethical questions can help students think about biology in interdisciplinary terms. Gene drives represent one topic involving both advanced biology concepts and societally relevant...

Courses: Genetics

bioethicsCRISPR/Cas9Genetic modificationGene drives

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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...

Courses: Genetics Science Process Skills

meiosismitosissex determinationAsexual reproductionParthenogenesis

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Sex and gender: What does it mean to be female or male?

This lesson provides three activities to engage non-science major students in a discussion about sex, gender, gender identity, and sex determination. Students prepare for the lesson by reading a short article titled Sex and gender: What is the...

Courses: Anatomy-Physiology Introductory Biology

gendersex determinationgender identitysex

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360

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Where Does Elsie's Hair Color Come From? A "De-Simplified" Pedigree Lesson

Pedigree analysis is part of most Genetics curricula, but the examples traditionally used in genetics courses present phenotypes as if they were entirely and inexorably defined by genotype. This does not reflect the current state of understanding...

Courses: Genetics Introductory Biology

pedigreeMultifactorialphenotypic variationpenetranceexpressivityquantitative variation

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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 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 an introductory biology or genetics instructor...

Courses: Cell Biology Genetics Introductory Biology

meiosismitosissex determinationAsexual reproductionParthenogenesis

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1462

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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 introductory biology course to support students in...

Courses: Introductory Biology Science Process Skills

geneticsVaccinesScientific ProcessGMOsviruses

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925

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From Cre/LoxP to Fate Maps: Inclusive and Equitable Approaches for Engaging Developmental Biology Students in Experimental Design

Engaging first generation underrepresented minority students in the process of inquiry in developmental biology is important to increase diversity in future graduate STEM education. One important challenge is how we design curricula to foster...

Courses: Developmental Biology

experimental designC. elegansCre/LoxPFate mapheart developmentheart regenerationmousereporter constructzebrafish

Teaching Tools and Strategies

2649

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The Pipeline CURE: An Iterative Approach to Introduce All Students to Research Throughout a Biology Curriculum

Participation in research provides personal and professional benefits for undergraduates. However, some students face institutional barriers that prevent their entry into research, particularly those from underrepresented groups who may stand to...

Courses: Developmental Biology Genetics Introductory Biology Science Process Skills

epigeneticsundergraduate researchmendelian inheritanceSelf-EfficacyCUREsnature of scienceResiliencecurriculum strategiesreprogramming

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An Introduction to Eukaryotic Genome Analysis in Non-model Species for Undergraduates: A tutorial from the Genome Consortium for Active Teaching

Advances in Next Generation Sequencing (NGS) technology have led to development of many research methods for analyzing genomic data. Students studying biology at the undergraduate level must hone their skills at genomic analysis to participate in...

Courses: Bioinformatics Genetics Science Process Skills

Speciationgenome evolutiongenetic variation

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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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...

Courses: Cell Biology Genetics Introductory Biology

recombinationmeiosisDNA sequenceCrossingoverchromosome structureHolliday junctionhomology

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1557

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Make It Stick: Teaching Gene Targeting with Ribbons and Fasteners

Manipulating gene expression is a commonly used tool to study the effect of a single gene or the hierarchy of gene networks in many different biological disciplines. When working with mice, the most commonly used techniques to manipulate genes...

Courses: Developmental Biology Genetics

mathematical modelhomologous recombinationCre/loxgene targeting