1. Mitosis is the Basis of Asexual Reproduction
Chapter 5
Mitosis is the Basis of Asexual Reproduction

2. Section 5.1: Mitosis
Page 142

3. Mitosis page 142
The Process by which the content in a cell’s nucleus divides
Results in 2 daughter cells nuclei each with the same number and kinds of chromosomes as the parent cell
“Marathon” writing activity suggested to tap into what students know about how cells are involved in growth and reproduction.
Instruct that all cells except the gametes use mitosis for growth and or cell replacement.
Not all have the same rate of cell reproduction, skin cells renew every days.
Stomach lining cells about 2 days, red blood cells about 120 days, brain cells years and do not renew! Liver cells about 200 days

4. Activity 5-1A From one Cell to Many Cells Page 138
Use Blackline Masters and Use for Evaluation
Ask the question wether they would rather have 1 million dollars or the amount of money you would have if you place a penny on a chess board and doubled the amount every block (64 blocks) would result in approximately 9.2 x 1018 pennies, at 30 there would be , over taking a million at block 28!
Activity 5-1A From one Cell to Many Cells Page 138

5. Prophase Metaphase Anaphase Telophase Stages of Mitosis
Use Blackline Master 2-10 for simple note taking, could Include Flip book activity or worksheets form 3D posters information

6. PROPHASE The double stranded chromosomes (DNA) shorten and thicken
The nuclear membrane begins to fade.

7. METAPHASE
X-shaped chromosomes are pulled into a single line across the middle of the cell.

8. ANAPHASE
The x-shaped sister chromatids are pulled to opposite poles of the cell.

9. TELOPHASE The nuclear membrane forms around each set of chromosomes.
The cell is ready to divide into 2 separate cells.
Have students reinact the process of mitosis acording to guided activity provided. Also could do a choice of assignment porfolio ideas including a mitosis flip book or creating a poster with string or pipe cleaners or other representation they prefer.
Have students look at

10. Cytokinesis:
The phase in the life cycle of a cell which separates the 2 cell nuclei and contents into 2 daughter cells after mitosis.
Interactive web-site

11. Activity 5-1C Observing the Cell Cycle in Plant Cells Page 148
Include Media presentations of Mitosis and stages as well as have the students look through a microscope. Activity to compare websites provided. State DNA is not visible in a cell unless it is undergoing division.
Check Your Understanding Questions page 151 #2-7
Activity 5-1C Observing the Cell Cycle in Plant Cells Page 148

12. Section 5.2: Asexual Reproduction
Page 152

13. ASEXUAL REPRODUCTION Only 1 parent is involved.
Offspring are identical to the parent.
Most reproduce quickly and in LARGE numbers.

14. Types of Asexual Reproduction:
Binary fission
Budding
Fragmentation
Vegetative reproduction
Spore formation

15. 1. Binary Fission
A single parent cell replicates its genetic material and divides into 2 equal parts Ex: amoeba bacteria

16. 2. Fragmentation
When an organism breaks apart as a result of injury, each fragment then develops into a clone of its parent Ex: starfish Japanese knotweed

17. 3. Budding
Part of the cell pushes outward to form an outgrowth or bud.
The bud pinches off to form the new offspring identical to parent.
Ex: yeast hydra sponge

18. 4. Vegetative Reproduction
Ex: bulbs sprouts runners
(tulip) (potato) (strawberry)
Occurs when special cells, in plants and roots, divide repeatedly to form structures that will eventually develop into plants identical to the parent.

19. 5. Spore Formation
A spore is a reproductive cell that grows into a new individual by mitosis.
Light in weight.
Rely on water, or wind to carry spores away from parent plant.
Bread mould

20. ASEXUAL REPRODUCTION Offspring are genetic clones
ADVANTAGES
DISADVANTAGES
Produces large numbers quickly
Large populations mean some may survive if environmental conditions change
Energy is not required to find a mate
Offspring are genetic clones
Negative mutations can destroy entire populations
Populations close together must compete
Unfavourable conditions can wipe out entire populations
Use a fishbone diagram to distinguish + and – of asexual reproduction

21. Set Questions page 165 #1,5,6,7,8,11,13,14
Chapter Review page 166, could use fish bone illustrated. #1,2,6,12,13,14,15,16, Also Pause and Reflect – Are offspring that are produced through asexual reproduction always identical to their parents?
CORE LAB Acitivty 5-2B Determining the Best Conditions for Yeast Reproduction Page 162