1. Sexual vs. Asexual Reproduction
Notes sheet on pg. 49 in BIN

2. Getting the Idea All living things must be able to reproduce!
Reproduction:
Process by which organisms produce more organisms like themselves.
Organisms will transfer genetic information to their offspring.
The 2 main types of reproduction:
Asexual
Sexual

3. Asexual Reproduction:
Mode of reproduction by which offspring arise from a single parent, and inherit the genes of that parent only.

4. Asexual Reproduction: Methods
Binary Fission
Budding
Fragmentation
Mitosis

5. Asexual Method: Binary Fission
The parent organism literally divides in two, producing two daughter organisms
Main way bacteria cells reproduce!

6. Asexual Method: Budding
A new “daughter” organism grows on the “mother” cell
The offspring organism is smaller than the parent organism
The “daughter” organism will remain attached as it grows, detaching only after it’s mature

7. Asexual Method: Fragmentation
An organism splits into fragments
Each fragment develop into mature, fully grown individuals

8. Asexual Method: Mitosis
Eukaryotes use mitosis to make new cells.
These cells enable the organism to:
Grow Larger
Replace damaged cells

9. Advantages No mate needed Can increase the population rapidly
Perfect for immobile organisms!
Can increase the population rapidly
Efficient!
*Asexual reproduction is perfect in a stable environment to which the parent is well suited*

10. Disadvantages No diversity!
All offspring vulnerable to the same threats
Produces offspring Identical to the parents
Offspring will inherit any mutations of the parent

11. Sexual Reproduction
Creation of a new organism by combining the genetic material of two organisms.

12. Sexual Reproduction: Methods
Internal Fertilization
External Fertilization

13. Method: Internal Fertilization
Sperm and Egg cells meet internally

14. Method: External Fertilization
A sperm cell is united with an egg cell outside of either organism

15. Advantages Diversity in organisms
Crossing over
Independent assortment
Offspring less likely to have mutations show up

16. Disadvantages Requires a mate to reproduce
May be hard to find
Organisms may spend much of their energy on finding a mate
Population increases are limited
Sexually reproducing organisms often have high parental care

17. In your notebook on Pg. 49…
Underneath your notes sheet, create and fill in some sort of graphic organizer comparing and contrasting the advantages and disadvantages of asexual and sexual reproduction
Be creative with your organizer!

18. Find a partner or two…
Create a “tweet” on pg. 44 of your BIN summarizing something from your notes today. It MUST be appropriate and include at least one relevant/related #hashtag
Ex:
If you want it done right you gotta do it yourself #asexual #clone