- Male and female gametes (egg and sperm) combine to form a zygote.
- Gonads are organs that produce gametes (male: testes, female: ovaries)
Incubation
- Embryos→ fetus→ infant
- growth through cell division and differenciation
Growth
- Cell division of somatic cells (non-sex cells).
Reproduction
- Puberty: parts of body begin to be able to make sex cells
- Meiosis: make more gametes
