1. Meiosis Graphic Organizer
For this Activity You will Need:
Blue Colored Pencil
Red Colored Pencil
Green Colored Pencil
Yellow Colored Pencil
Lead Pencil

2. Goal of Meiosis
THINK! – What is the goal of meiosis? Fill the answer into the box on your graphic organizer.
To create 4 sex cells (sperm or egg) each with HALF the number of DNA molecules (chromosomes) as the original cell

3. Interphase I
DNA Replicates (doubles)

4. Prophase I Duplicated Chromosome pairs match up.
Let’s say the normal chromosome # is 4…
Duplicated
Chromosome pairs match up.
(1 from mom & 1 from dad
in each pair)

5. Metaphase I
Chromosome pairs line up in the middle of the cell

6. Anaphase I
Chromosome pairs split.
NO centromere breaking!

7. Telophase I

8. Cytokinesis I

9. Interphase II NO DNA Replication
(no doubling as must reduce the chromosome # in half)

10. Prophase II

11. Metaphase II
Duplicated Chromosomes line up in the middle of the cells

12. Anaphase II
Duplicated Chromosomes split.
Centromeres break.

13. Telophase II

14. Cytokinesis II 2 2 2 2
4 Sex Cells

15. Male vs. Female Meiosis Males – All 4 sex cells are healthy and used
Females – During cytokinesis one egg cell HOGS all the cytoplasm. The other 3 cells shrivel and die. Thus, only one cell is healthy and usable
BRAIN POP – Fertilization & Birth
United Streaming Video Clip: Meiosis (3:48)
Meiosis Animation_Glencoe
Pay attention to these video clips to see meiosis in action.