Download Mitosis

Bell Work
RHLT1: I can explain the role of genes and
chromosomes in the passing of information
from parent to offspring.
1. Why do you think it is important for your
body cells to reproduce?
Answer with at least 2 sentences.
Mitosis
7th Grade Science
Mrs. Jerolaman
Mitosis
A process of cell division that creates 2
genetically identical nuclei
1 Parent cell (1 nucleus)
Divides into
2 Identical
Daughter cells
(2 nuclei)
Each daughter cell inherits a complete copy of
DNA from the parent cell
Four Steps of Mitosis
P.M.A.T.
Pancakes
Make
Awesome
Treats
Prophase
Preparation for
cell division
Duplicated
chromosomes
condense
Nuclear
membrane
breaks apart
Metaphase
Chromosomes
line up in the
center of the cell
Anaphase
Sister chromatids
separate and are
pulled to opposite
ends
Each copy of the
chromosomes are
now “daughter”
chromosomes
Telophase
Chromosome
copies are now at
opposite ends
Nuclear
membranes
reform around
each set of
chromosomes
2 identical nuclei
are formed
The last step in cell division is:
Why do cells divide through mitosis?
Growth of organism
Repair of wounds
Replace old, dead or dying, cells
Produce offspring (some organisms)
Regeneration (some organisms)
Video
http://player.discoveryeducation.com/index.cfm?guidAssetId=
3A07A423-2EE2-4C6C-AD6EC8A5AABC335E&blnFromSearch=1&productcode=US
Exit Slip
1. 1 thing you have learned and understand about
mitosis.
2. 1 thing you still do NOT understand about
mitosis.
GOOD JOB AND HAVE A GREAT DAY!!!!!!!!!!!!!!! 
Where does mitosis fit into the
eukaryotic cell cycle? Let’s review