Cell Division and Asexual Reproduction

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