IB Biology D3.2.6 Phenotypic plasticity
IB Biology D3.2.6 Phenotypic plasticity

IB Biology syllabusBiology SL/HLFirst assessment 2025
Practise recognising phenotypic plasticity when environmental conditions alter observable traits without changing the genes.
How this is tested
- explain phenotype differences caused by incubation temperature, not mutation
- distinguish environmental effects on expression from changes to genes
- apply phenotypic plasticity to moth wing colour pattern scenarios
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