Transcript Cell Cycle Graphic Organizer

Meiosis Graphic Organizer
For this Activity You will Need:
Blue Colored Pencil
Red Colored Pencil
Green Colored Pencil
Yellow Colored Pencil
Lead Pencil
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
Interphase I
DNA Replicates (doubles)
Prophase I
Let’s say the normal chromosome # is 4…
Duplicated
Chromosome pairs match up.
(1 from mom & 1 from dad
in each pair)
Metaphase I
Chromosome pairs line up in
the middle of the cell
Anaphase I
Chromosome pairs split.
NO centromere breaking!
Telophase I
Cytokinesis I
Interphase II
NO DNA Replication
(no doubling as must reduce
the chromosome # in half)
Prophase II
Metaphase II
Duplicated Chromosomes line up in the
middle of the cells
Anaphase II
Duplicated Chromosomes split.
Centromeres break.
Telophase II
Cytokinesis II
2
2
2
4 Sex Cells
2
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.