1. Asexual vs. Sexual Reproduction

2. I Can … Define asexual reproduction Define sexual reproduction
Describe the differences between sexual and asexual reproduction

3. I Will Read and study PowerPoint & Video
Complete a Venn Diagram (asexual reproduction and sexual reproduction)
Illustrate (draw pictures) fertilization, budding, sexual reproduction, and asexual reproduction (be careful!!!)
Explain and describe fertilization, budding, asexual reproduction, and sexual reproduction (working with a partner/small group)
Write a paragraph (at least 5 sentences) explaining how offspring from sexual reproduction have more genetic differences than offspring from asexual reproduction

4. Sexual Reproduction Sexual Reproduction 1. 2 parents
2. Sex cells: sperm and egg
3. Sperm and egg join= fertilization
4. Offspring look different from parent (mixed DNA)

5. Sexual Reproduction Sexual Reproduction 5. Examples
Humans, some plants, mammals, fish, reptiles, etc.

6. Sexual Reproduction
Fertilization: part of the process of sexual reproduction in which a male reproductive cell and a female reproductive cell combine
to form a new cell that can develop into a new organism.

7. Advantages: Sexual Reproduction
Diverse offspring: genetic variation among offspring
Half of the DNA comes from mom
Half of the DNA comes from dad
Due to genetic variation, individuals within a population have slight differences
Plants – resist diseases
Traits can develop to resist harsh environments that allows an organism survive

8. Asexual Reproduction Asexual Reproduction 1. One parent
2. No sex cells
3. Offspring produced by cell division
4. Offspring identical to parent (same DNA)
5. Several types in plants and animals

9. Types of Asexual Reproduction
Binary Fission
1. Organism divides in half
2. 2 identical daughter cells produced
3. Daughter cells are half the parent’s size
4. Daughter cells grow, then divide too
5. In bacteria

10. Fission: Asexual Reproduction
Fission: Cell division in prokaryotes that forms two genetically identical cells
DNA is copied
The cell begins to grow longer, pulling the two copies apart
The cell membrane pinches inward in the middle of the cell
Cell splits to form two new uniform, identical offspring
Examples: bacteria, Ecoli, pond critters

11. Types of Asexual Reproduction
Budding
1. Small bud grows out of parent cell
2. Two different sized cells made (with identical DNA)
3. Bud breaks off and grows
4. In yeast and hydra

12. Types of Asexual Reproduction
Regeneration
1. Repair/ grow lost body parts
2. Left over cells divide to make more cells
3. Lobsters, starfish, lizards

13. The numbers The cells created from mitosis are diploid or 2n.
The cells created from meiosis are haploid or n
Definitions:
Diploid (2n) – two of each type of chromosome (in homologous pair – carry the same trait)
Haploid (n) – one of each type of chromosome

14. Mitosis Meiosis Parent cell Parent cell Diploid (2n) Diploid (2n)
Daughter cell
Parent cell
Diploid (2n)
1st division
2nd division
Daughter cell
Haploid (n)

15. Mitosis
Meiosis
Meiosis

16. One last thing… [the] where?
Mitosis occurs in normal body cells (i.e. skin cells), and meiosis occurs in sex cells (i.e. sperm and egg) only.

17. What type of reproduction is this??? Explain…

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30. Asexual vs. Sexual

31. Video
Please note: there are a limited number of headsets available in the classroom so you will need to be patient.
If headphones are not available when you are, continue working on other parts of the assignment …be sure and sign the headphone sign up sheet to keep your place in line.