D3.1.6—Fertilization in humans
Human fertilization involves sperm and egg nuclear changes that allow their genetic material to combine into a zygote after gamete interaction.
- Syllabus
- First assessment 2025
- Objective
- D3.1.6
- Level
- SL
Exam analysis
Chance of appearing1%of analysed past papers
Latest appearanceMay 2025
Most common paperPaper1A
Typical marks1
Common command terms
- Identify
Recent exam appearances
May 2025Paper1A ["SL"] · TZ320[ 1 ]D3.1.6—Fertilization in humans
Practice this objective
Coverage 2025–2025 · Updated 16 Jul 2026
Concept essentials
- Fertilization is a cellular process involving sperm and egg nuclei.
- The event is distinct from meiosis, which has already produced gametes.
- The zygote begins development only after fertilization has combined gamete genetic material.