IB Biology D4.1.1 Natural selection as mechanism
IB Biology D4.1.1 Natural selection as mechanism
Practise building full natural selection explanations from variation through differential survival, reproduction and changing trait frequencies.
How this is tested
- explain population change by linking variation, competition and reproductive success
- apply natural selection to traits in plants, behaviour, malaria resistance and foraging data
- evaluate evidence for selection favouring a trait under a stated environmental pressure