Select a structure
Diagram or keyboard controlsChoose a labelled region to inspect its function and exam focus.
Timeline
0.00 stage
Live measurements
- mRNA codons
- 5.00
- Amino acids added
- 4.00
- Changed amino acids
- 0.00
- Visible process stage
- 1.00
BiologyGCSE & A-Level9 minBeta
DNA → Protein Explorer
Follow a gene through transcription and translation, inspect codons and compare how missense, silent and early-stop substitutions change a polypeptide.
Model presets
Reviewed starting statesCurriculum map
- AQA GCSE Biology
Inheritance, Variation and Evolution → DNA, genes and protein synthesis - AQA A-Level Biology
Genetic Information, Variation and Relationships → Transcription, translation and the genetic code
Model boundaries
- The displayed DNA is the coding strand written 5′ to 3′ for a short authored example.
- Transcription and translation are simplified to emphasise information flow rather than enzyme-level detail.
- Only the codons needed by the four reviewed sequences are modelled.
StudyVector-authored genetic-code model using fixed reviewed DNA sequences and deterministic codon translation; mapped to the curriculum topics shown below.
Accessible text description
A left-to-right pathway moves from a DNA double helix inside a nucleus to an mRNA strand, a ribosome with tRNA and a completed amino-acid chain. A manual timeline reveals five stages. The exact coding-DNA and mRNA codons are displayed, the changed second codon is highlighted, and the translated amino-acid sequence updates for four reviewed variants.