1. Catalyst 5/7/14
Go to class website: and scroll down to Catalysts. Complete the questions and press submit.
Question:
When does “cross over” happen in meiosis? Why is this important for biodiversity among sexually reproducing organisms?

2. Biology Agenda 5/7/14 Catalyst Announcements
Birth Control Method Presentations
Meiosis Discussion
Meiosis Classwork (WebQuest)
Checkpoint
Human Body Model Project Work Time (Period 7)

3. Male Reproductive System Overview

4. Female Reproductive System Overview

6. Meiosis Animation

7.  Objectives We will be able to
Create a persuasive infomercial or pamphlet on a method and brand of a contraception product.
Explain the process of meiosis and its importance in sexual reproduction. 

8. Definitions
Diploid Cells—cells that have pairs of chromosomes. There are 2 of each chromosome in diploid cells.
Haploid Cells—cells that have only one of each chromosome. Haploid cells are used for sexual reproduction.

9. Creating Cells for Sexual Reproduction
Meiosis:
Creating Cells for
Sexual Reproduction

10. Prophase I Chromosomes are already copied Centrioles separate
Nuclear membrane breaks down

11. Metaphase I
Chromosome pairs line up next to each other

12. Anaphase I
Chromosome pairs split
Sister chromatids stay connected

13. Telophase I Cell starts to divide in two
Nuclear membranes start to form again

14. Prophase II Cells have one set of sister chromatids
Nuclear membrane breaks down
Centrioles separate

15. Metaphase II
Sister chromatids line up at the middle of the cell

16. Anaphase II
Sister chromatids divide

17. Telophase II Cells start to split in two
Each cell has one set of chromosomes—it is a haploid