1. 9/28 warm-up What is asexual reproduction What is sexual reproduction
What are the advantages and disadvantages of each?

2. Asexual vs. Sexual Reproduction

3. Asexual Reproduction Requires only one parent
Offspring have 100% the same chromosomes as the parent.
In other words, the offspring are exact “clones” of the parent.
Most unicellular organisms reproduce
this way.
Mitosis is an example of asexual reproduction
Movie

4. Asexual Reproduction
Advantages and Disadvantages of Asexual Reproduction
Advantages – Identical to parent, so will get all good characteristics.
Disadvantages – Identical to parent, so will also get bad characteristics and is less able to adapt to the environment.

5. Asexual Reproduction Types of Asexual Reproduction
Binary Fission – used by bacteria, an organism whose cells do not contain a nucleus copy then divide into two identical organisms
Example: bacteria

6. Asexual Reproduction Types of Asexual Reproduction
Budding – organism that produces a bud that breaks away to live on its own.
Example: hydra

7. Asexual Reproduction Types of Asexual Reproduction
Regeneration (Fragmentation) – organism uses cell division to re-grow body parts.
Example: starfish, salamander

9. Asexual Reproduction Types of Asexual Reproduction
Vegetative Fragmentation – results in a new plant that is genetically identical to the parent plant (a clone).
Examples: strawberry plant, vegetables, and crops.

10. Asexual Reproduction Examples of organisms that reproduce asexually
Hydra
Sea Star
Strawberry
Archaebacteria
Eubacteria
Euglena
Paramecium
Yeast

11. Sexual Reproduction
Requires two parents that each share ½ of the genetic information.
Offspring share the characteristics of each parent.
Meiosis occurs during sexual reproduction

12. Sexual Reproduction Two parents
Offspring are a combination of both parents and are therefore different from each parent.
unique / diverse offspring
Two Parents

13. Sexual Reproduction
Advantages and Disadvantages of Asexual Reproduction
Advantages – variety and/or diversity of offspring (color, shape, size, intelligence, ability, etc.), More able to adapt to environmental changes.
Disadvantages – uniqueness, sometimes traits needed for survival are not passed on.

14. Sexual Reproduction Types of Sexual Reproduction
Plants – when the reproductive cells of one plant fertilize (pollinate) the reproductive cells of another plant. This produces seeds that can grow into a new plant.

15. Sexual Reproduction Types of Sexual Reproduction.
Animals – when the reproductive cells of one animal fertilize the
reproductive cells of
another animal. This produces a baby (embryo).

16. External Fertilization
External fertilization usually requires a medium such as water, which the sperms can use to swim towards the egg cell. External fertilization usually occur in fish and amphibians.
The females lay the eggs in the water and the male squirts the sperm in the same area.

17. Internal Fertilization
Fertilization occurs within the female.
Internal fertilization occurs in mammals, insects, birds, reptiles.
Mammals (gorillas, lions, elephants, rats, zebras, and dolphins have live births)
Insects, birds, reptiles lay eggs

18. The Role of DNA Animation: dividing http://www.johnkyrk.com/chromoso
mestructure.html

19. Cell Differentiation
Cell differentiation- process in which a generic cell develops into a specific type of cell in response to triggers from the body or the cell itself.
Allows a single celled zygote to develop into a multicellular adult organism that can contain hundreds of different types of cells.

20. Cell Differentiation Expression of Specific Genes in the DNA will lead to a specific type of cell

22. Pass DNA from parent to offspring
Make a Venn Diagram
4 items here
Sexual Reproduction
Asexual Reproduction
Both
Pass DNA from parent to offspring
4 items here
4 items here
3 items here

23. Summarize
Write two paragraphs with 6 sentences each describing asexual and sexual reproduction. It can also include the two things they have in common.
Paragraph 1: Asexual reproduction is…..
Paragraph 2: Sexual reproduction is…