1. Reproduction (to make sure a species can continue)
Sexual
Asexual

2. Asexual Reproduction requires 1 parent
offspring are genetically identical to the parent
Less genetic diversity
Many offspring in a short amount of time

3. Asexual Reproduction Examples: Binary Fission Budding Sporulation
Regeneration
Vegetative Propagation
Mitosis

4. 1. Binary Fission
Reproduction in Prokaryotic Cells (Bacteria)

5. Chromosome replicates 2 identical daughter cells
Parent cell
Prokaryotes such as bacteria divide into 2 identical cells by the process of binary fission
Single chromosome makes a copy of itself
Cell wall forms between the chromosomes dividing the cell
Chromosome replicates
Cell splits
2 identical daughter cells

6. Prokaryotic Cell Undergoing Binary Fission

7. Animation of Binary Fission

8. 2. Budding
Occurs in yeast and hydra when a tiny bud sprouts from a parent

11. 3. Sporulation
New mold growing where spores have fallen, also occurs in ferns

12. http://biodidac. bio. uottawa. ca/thumbnails/filedet. htm

13. 4. Regeneration
Repairing severed appendage (starfish or lizard tail)

15. http://classes. design. ucla

16. 5. Vegetative Propagation
Growing new roots for a plant from plant clippings

17. 6. Mitosis
occurs in single celled eukaryotes like paramecium, splitting the nucleus or to make new body cells

18. Sexual Reproduction requires 2 parents
offspring are genetically different from the parents
More genetic diversity
uses sex cells (sperm and egg)

19. Sexual Reproduction
Example:
Meiosis

20. Sexual Reproduction
Step 1:
sex cells are made by meiosis

21. Sexual Reproduction Step 2:
male & female sex cells come together to form a fertilized egg (zygote)

22. Number of Chromosomes
Haploid
Diploid

23. Diploid Body Cells (Somatic) 2N (Double) 46 Chromosomes (Human)
Examples: nerve, skin

24. Haploid Sex Cells (Gametes) N (Half) 23 Chromosomes (Human)
Made in Reproductive Organs
Testes – sperm
Ovaries - egg