CourseSource: Resources

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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

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2158

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409

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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...

Courses: Biochemistry and Molecular Biology Genetics

dna structureDNA damageDNA recombinationGene crossoverHolliday junction

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5681

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1171

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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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6321

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557

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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...

Courses: Cell Biology Genetics Introductory Biology

meiosischiasma formationchromosome recombination