genus and species
What genus and species means in Biology A-Level, as defined for AQA, OCR.
Definitions of genus and species
Exam boards and our study guides word this term in slightly different ways. Learn the version your board uses.
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Reference: OCR
The genus groups closely related species, while the species epithet identifies one species within it; the genus comes first and the species second.
The last two levels are the ones used in the organism's name, so a column ending with a genus and a species name has ended in the right place.
Topics that use genus and species
- Species and taxonomy (AQA A-Level)
- Classification and evolution (OCR A-Level)
Related terms
- amino acid sequence comparison
- Antibiotic resistance
- Binomial nomenclature
- biological species concept
- Cell structure and wall composition
- Change in allele frequency over generations
- classification tables
- common names
Using genus and species in the exam
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