D4.1.8—Modelling selection
Models of selection simplify populations so changes in survival, reproduction or allele frequency can be tested and visualized in evolving populations.
- Syllabus
- First assessment 2025
- Objective
- D4.1.8
- Level
- SL
Exam analysis
Chance of appearing1%of analysed past papers
Latest appearanceMay 2025
Most common paperPaper1A
Typical marks1
Common command terms
- Describe
- Explain
Recent exam appearances
May 2025Paper1A ["SL"] · TZ129[ 1 ]D4.1.8—Modelling selection
Practice this objective
Coverage 2025–2025 · Updated 16 Jul 2026
Concept essentials
- Models can show how selection changes variant frequencies over generations.
- A model must define what its symbols or organisms represent.
- Model conclusions are limited by simplifications and controlled assumptions.