Biology A-Level
no overlap
What no overlap means in Biology A-Level, as defined for AQA.
Definition of no overlap
Check what you remember
Read the wording for your board, then hide it and explain no overlap in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A species cannot sit in two genera, and a genus cannot be shared between two families, so at every level an organism has exactly one place.
Topics that use no overlap
- Species and taxonomy (AQA A-Level)
Related terms
- amino acid sequence comparison
- biological species concept
- classification tables
- common names
- convergent similarity
- domain to species
- eight taxonomic levels
- fertile offspring
Using no overlap 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.
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