Interactive explorer
Epigenetics explorer
These are teaching models, not universal deterministic switches for every gene or disease.
What this explorer teaches
Educational models of DNA methylation, histone modification, and chromatin accessibility.
Learning goal: Keep claims modest: associations and mechanisms vary by context; no clinical advice.
Interactive model
Educational model — simplified for learning. Not medical advice. Features are conceptual and not drawn to molecular scale unless stated.
DNA methylation
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Text-only walkthrough (same content as the interactive steps)
- DNA methylation
- Histone modifications
- Accessibility outcomes
- Model caveats
Guided steps (text)
- Step 1: DNA methylation
- Step 2: Histone modifications
- Step 3: Accessibility outcomes
- Step 4: Model caveats
How to use this explorer
- Advance with Next / Previous, the step chips, or keyboard ← →.
- On touch devices, tap chips and buttons (minimum comfortable target size).
- If you prefer reduced motion, the site respects
prefers-reduced-motionand jumps between states without animation. - Screen-reader / keyboard users: focus stays on controls; the live region announces the current step.
Scientific notes & limits
DNA methylation, histone modifications, and remodeling can correlate with accessibility and expression changes. Effects are context-dependent. These are educational models — not universal deterministic switches, and not clinical or diagnostic guidance.
Related lessons
- Epigenetics — Epigenetics studies heritable gene-activity states that do not change DNA sequence.
- DNA methylation — DNA methylation is a chemical modification of DNA bases—commonly cytosine in CpG contexts—in many organisms.
- Histone modification — Histone modifications are chemical marks on histone proteins that help regulate chromatin behavior.
- Chromatin — Chromatin is the DNA–protein complex that packages eukaryotic genomes and helps regulate gene access.