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Eukaryotic Gene Regulation Layers

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About This MicroSim

This MicroSim turns the abstract layers of eukaryotic gene regulation into a responsive stacked infographic. Each band represents a regulatory checkpoint—chromatin, transcriptional, post-transcriptional, translational, and post-translational. Students click any band to populate the persistent detail panel on the right, making it easy to compare narratives about activation and repression at every checkpoint. A Start/Pause flow animation highlights each checkpoint sequentially to show how signals pass from chromatin opening to final protein activation or degradation.

How to Use

  1. Explore each layer: Click a colored band to highlight it and load its description into the right-hand info panel. The panel expands on the layer with a longer explanation of how activation and repression occur.
  2. Trace the regulatory flow: Press Start Flow to animate the progress of a gene through the five checkpoints. Each time the flow advances, the glowing markers and the info panel automatically shift to that checkpoint so students can read the matching description.
  3. Adjust pacing: Use the Flow Speed slider (value displayed to the left) to control how long the animation stays on each checkpoint. Slower speeds provide more reading time; faster speeds emphasize the full pipeline.
  4. Pause anytime: Select Start Flow again to pause the animation at the current checkpoint (the last clicked info panel remains visible for comparison).

Iframe Embed Code

You can add this MicroSim to any web page by adding this to your HTML:

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<iframe src="https://dmccreary.github.io/biology/sims/eukaryotic-gene-regulation/main.html"
        height="450px"
        width="100%"
        scrolling="no"></iframe>

Lesson Plan

Grade Level

Grades 9-12 Biology

Duration

10-15 minutes

Prerequisites

  • Basic understanding of DNA structure and the central dogma (DNA → RNA → protein)
  • Familiarity with the role of transcription factors and ribosomes

Activities

  1. Exploration (5 min): Students click through each layer and jot down one activation and one repression mechanism per band.
  2. Guided Practice (5 min): Run the flow animation at two different speeds and discuss what would happen if one checkpoint failed.
  3. Assessment (5 min): Learners select the layer they find most complex and explain its regulation aloud or via a short written response.

Assessment

  • Student explanations correctly sequence the five regulatory layers.
  • Learner notes include at least one molecular mechanism (activation or repression) for each layer.
  • Students adjust flow speed intentionally to support their explanation or presentation.

References

  1. Alberts, B. et al. (2019). Molecular Biology of the Cell (7th ed.). Garland Science.
  2. Lodish, H. et al. (2021). Molecular Cell Biology (9th ed.). W. H. Freeman.