Transcript Introduction_to_Mitosis

Cell Division: Mitosis
Basic Animal Genetics, ANR.C.C7.5
Objective:

Understand the purpose of mitosis

Understand the process of mitosis

Explain the sequence and events of each phase
Review:
What are the two types
of cells?

Eukaryotic

Prokaryotic
What are prokaryotic
cells?
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
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Simple cells
Few internal
structures
No membrane
bound organelles
One-celled
organisms, Bacteria
Examples of prokaryotic
cell:
Bacteria
Cells
What are eukaryotic
cells?


Cells that contain organelles surrounded
by membranes
Most living organisms
Examples of eukaryotic
cells:
Plant
Animal
Human
Cells
Cells
Cells
Plant Cell
Animal Cell
(Tomato)
(tiger)
How do prokaryotic
cells divide?

Binary Fission

(A fancy name that scientists use
to impress their girlfriends or
boyfriends. A process where
one prokaryotic cell becomes
two.)
How do eukaryotic cells
divide?

Mitosis!
What is mitosis?


(How eukaryotic cells divide.)
A continuous process of four phases that
results in the division of the nucleus.
Making more
cells!
Why do we
care?

Once upon a time we were
all one little cell.

Because of mitosis we are
now made of trillions of
cells.

This applies to animals too!
Made possible, in part by:
MITOSIS
Made possible, in part by:
MITOSIS
Made possible, in part by:
MITOSIS
You get the idea…
The
Phases
of
Mitosis
The 4 Phases of Mitosis:
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Prophase
Metaphase
Anaphase
Telophase
What about Interphase?

Interphase is the resting period between cell
division.
Why do we study diagrams first?



Easy to identify structures
Clear
Simple
Why do should we view microscopic
images also?

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To see the real deal!
To reveal greater complexities.
Interphase
diagram
microscopic image
Are the cells really pink and purple?

Nope, they are
stained so that we
can see the
organelles better.
Prophase
diagram
microscopic image
Metaphase
diagram
microscopic image
Anaphase
diagram
microscopic image
Telophase
diagram
microscopic image
They all look like blobs… how can
we tell them apart?
What’s happening in each phase?