2. SEXUALITY
Human reproduction involves two different sex cells: a female
ovum and a male sperm.
Each cell carries genetic information. Children have genetic
code from their parents.
Stages:
- Fertilisation
- Development of the embryo
- Development of the foetus
- Birth
4. 1. FERTILISATION
• The man’s penis is inserted into the woman’s vagina.
• The sperm are deposite there. Then, they swim up the vagina
to the ovum.
• Only one sperm can fertilise an ovum.
• Once the ovum is fertilised, the cells will start to divide and
multiply. This ball of cells is called zygote.
5. 1. FERTILISATION
• Reproduction begins in the fertilisation.
• When it happens?
https://en.wikipedia.org/wiki/Human_fertilization
• Alternatives:
• Artificial insemination.
• In vitro fertilization.
