D3.1.3—Male vs. female sexes
Male and female sexes are distinguished by the gametes they produce, with males producing sperm and females producing eggs for fertilization.
- Syllabus
- First assessment 2025
- Objective
- D3.1.3
- Level
- HL
Concept essentials
- Males are defined by production of sperm gametes.
- Females are defined by production of egg gametes.
- Secondary sexual characteristics support reproduction but are not the primary definition of sex.
ConceptIB Biology HL