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Cell Division and Asexual Reproduction

Cell Division and Asexual Reproduction. Two Types of Reproduction. Asexual Only one parent Offspring are identical to parent Sexual Two parents (egg cell and sperm cell). Types of Asexual Reproduction. Binary Fission Budding Vegetative Reproduction Fragmentation Spore Formation.

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Cell Division and Asexual Reproduction

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  1. Cell Division and Asexual Reproduction

  2. Two Types of Reproduction • Asexual • Only one parent • Offspring are identical to parent • Sexual • Two parents (egg cell and sperm cell)

  3. Types of Asexual Reproduction • Binary Fission • Budding • Vegetative Reproduction • Fragmentation • Spore Formation

  4. Characteristics of Asexual Reproduction • Only one organism is needed to reproduce • All the offspring are genetically identical to each other and to the parent organism • A single organism can produce large numbers of offspring

  5. Binary Fission • Parent undergoes cell division to produce two genetically identical daughter cells or offspring • Example: Bacteria

  6. Binary Fission • Allows for rapid population growth under ideal conditions • Bacteria can double population every 20 mins

  7. Budding • Offspring begin as a small growth on the parent • Bud keeps growing (cell division) and eventually breaks off from parent • Example: Yeast

  8. Vegetative Reproduction • Plants that reproduce asexually • Strawberries send out “runners” that can form into new plants

  9. Fragmentation • Small part of an animal breaks off and grows into a new organism • Example: Sea Star

  10. Fragmentation • Parent can regrow lost body part • Called “Regeneration”

  11. Spore Formation • Reproduction via forming large numbers of spores • Spores = similar to seeds

  12. Cloning Bill Nye: Cloning Video

  13. Cloning Activity - Groups of 3 • You and your group are in charge of the Science and Technology branch of the Government of Canada • List out the pros and cons of cloning (human, animals, etc.) • State your stance on cloning (fully agree on all fronts? Support only animal cloning? Human cloning?) • Submit regulations (“we will allow cloning under these circumstances”)

  14. Review Questions • To help study for the test • Will not be collected, but if you do these questions, it will definitely help • Page 184 - 185 • Questions 2, 4, 6, 7, 10, 12, 16, 20

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