A powerpoint slideshow about meiotic divisions. Great for using it in the classroom.

1. Phase by phase

3. Seperates homologous chromosomes

4.  Chromosomes begin to
condense
 Crossing over is completed
while homologs are
synapsis
 Each homologous pair has
one or more chiasmata
 Centrosome movement,
spindle formation, and
nucleur envelope
breakdown occur.

5.  Pairs of homologous
chromosomes are now
arranged on the
metaphase plate.
 Both chromatids of one
homolog are attached to
kintechore microtubules
from one pole.

6.  The homologs move
toward opposite poles,
guided by the spindle
fibers.
 Each pair of homologous
chromosomes seperates.

7.  Each half of the cell has a
complete haploid set of
replicated chromosomes.
 Cytokinesis (division of
the cytoplasm) forms 2
haploid daughter cells.
 Chromosomes then
decondence and the
nucleur envelope re-
forms.

8. Separate sister chromatids

9.  Spindle apparatus forms
 Chromosomes move
toward the metaphase 11
plate

10.  Chromosomes are
positioned on the
metaphase plate.
 Because of crossing over
in meiosis 1, the two
sister chromatids are not
genetically identical.
 Kinetochores of sister
chromatids are attached
to microtubules
extending from opposite
poles.

11.  The chromatids of the
chromosomes separate.
 The chromatids move
toward opposite poles.

12.  Nuclei form, the
chromosomes begin
condensing, and
cytokinesis occurs.
 The meiotic division of
one parent cell produces
four daughter cells, each
with a haploid set of
chromosomes.