Three-domain classification
What Three-domain classification means in Biology GCSE, as defined for AQA.
Definition of Three-domain classification
Check what you remember
Read the wording for your board, then hide it and explain Three-domain classification in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A system developed by Carl Woese, using evidence from chemical analysis, that divides organisms into archaea, bacteria and eukaryota.
Topics that use Three-domain classification
- Classification of living organisms (AQA GCSE)
Related terms
- Binomial naming
- Binomial system
- Biochemical evidence and DNA sequencing
- Changing classification
- Classification
- Combining multiple evidence sources
- Current classification data
- Evidence-based classification
Using Three-domain classification 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.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge