Biology GCSE
codon
What codon means in Biology GCSE, as defined for AQA.
Definition of codon
Check what you remember
Read the wording for your board, then hide it and explain codon in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A complementary mRNA sequence transcribed from a DNA template triplet, read in order by the ribosome to assemble the protein.
Topics that use codon
- DNA structure (biology only) (AQA GCSE)
Related terms
- Amino acid sequence
- Base sequence
- Carrier molecules
- Complementary base pairing
- degenerate
- double helix
- Enzyme action
- Enzyme structure and function
Using codon in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Biology questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Biology GCSE termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge