Asexual vs Sexual reproduction

• Asexual reproduction:

  • 1 parent
  • Mitosis
  • diploid cell
  • Produces 2 cells
  • 1 cell division
  • Produces clones
  • Genetically identical daughter cells
  • fast process
  • colonise areas quickly
  • Used for growth and repair - everywhere but sex organs
• Fertilization occurs when two gametes fuse to form a zygote.
• Sexual reproduction:

  • 2 daughter cells
  • 2 cell division
  • 2 parents
  • Meiosis
  • haploid cell
  • produces 4 genetically different daughter cells
  • slow process
  • sex organs
  • produces gametes
• Meiosis

  • fusion of gametes
  • plants: egg + pollen grain = seed
  • animals: egg + sperm = embryo
  • natural selection , evolution, survival
  • important because: halves number of chromosomes
  • REPRODUCE SLOWLEY
• Mitosis:

  • no fusion of gametes
  • no levels of resistance
  • no genetic variation
  • requires less energy
  • REPRODUCE QUICKLY
• PROCESS OF MEIOSIS

  1. diploid cell, 46 chromosomes
  2. Each chromosome duplicates its genetic material
  3. each pair of inherited mother chromosomes pairs up with inherited father chromosomes
  4. each chromosome pair is separated and the cell divides
  5. 2 new cells with either maternally or paternally inherited chromosomes, chromosomes line up in middle of each cells
  6. each duplicated copy is separated
  7. 4 new genetically different daughter cells
• strawberry's and fungi can do both to incorporate benefits from both