Reproduction

• Sexually transmitted diseases (STDs)


  Diseases that are transmitted from infected individuals to uninfected individuals through sexual contact
• STDs


  • HIV/AIDS
  • Syphilis
  • Gonorrhea
• Cause of STDs


  Microorganisms such as viruses, bacteria and fungi
• HIV/AIDS is caused by a virus
• Preventive measures for spread of HIV/AIDS

  • Use protection (e.g. condom) during sexual intercourse
  • Avoid multiple sex partners
  • Increase awareness through sex education at school
• Reproduction


  The process of producing new individuals of the same kind
• Reproduction


  • Helps in the continuity of the species so that it does not become extinct
  • There are two main types: asexual and sexual
• Asexual reproduction


  A single parent is involved in producing genetically identical offspring(s), with no fusion of gametes
• Sexual reproduction


  Male and female parents are involved in producing genetically dissimilar offsprings, with fusion of gametes
• Testes and ovaries


  Reproductive organs involved in producing male and female gametes respectively
• Fertilisation


  Male and female gametes fuse to form a zygote, which eventually develops into a new individual