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Understanding operon architecture using LEGO bricks.

Dena R Hammond-Weinberger1, Christopher W Lennon1

  • 1Department of Biological Sciences, Murray State University, Murray, Kentucky, USA.

Journal of Microbiology & Biology Education
|April 25, 2024
PubMed
Summary
This summary is machine-generated.

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This study introduces a LEGO brick model for the lac operon, aiding undergraduate molecular biology students. The hands-on exercise makes abstract concepts of gene regulation tangible and engaging.

Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • Undergraduate students often find abstract molecular biology concepts challenging.
  • Effective learning tools are needed to make complex topics like gene regulation more accessible.
  • The lac operon is a fundamental model system for teaching transcriptional regulation.

Purpose of the Study:

  • To develop and evaluate an active learning exercise for teaching the lac operon to undergraduates.
  • To utilize LEGO bricks as a tangible modeling tool for abstract molecular biology concepts.
  • To enhance student engagement and comprehension of gene expression regulation.

Main Methods:

  • Designed an exercise using LEGO bricks to represent the components of the lac operon.
  • Students assembled models to demonstrate lac operon function under different nutritional conditions.
Keywords:
LEGOSTEM educationcatabolite repressiongene regulationin-class activitylac operonstudent-centered

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  • The model was used to illustrate basic and higher-order concepts, including mutations.

    • Main Results:

    • The LEGO model effectively demonstrated the orientation of lac operon components and control of gene expression.
    • Students could model the impact of mutations on lac operon expression.
    • The exercise was found to be enjoyable and beneficial for student engagement with the material.

    Conclusions:

    • LEGO-based modeling provides a tangible and effective method for teaching the lac operon.
    • Active learning with physical models can improve undergraduate understanding of molecular biology.
    • This exercise offers a practical approach to visualizing complex gene regulation mechanisms.