MITOSIS

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MITOSIS
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What is Mitosis?
A period of nuclear cell division resulting in 2
daughter cells, each cell containing a COMPLETE
set of chromosomes.
Why does Mitosis occur?
To replace the dying cells with new cells that
are exact copies of the old cells.
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Where does Mitosis occur?
Mitosis occurs in all somatic (NON-SEX) cells.
What type of cell division takes place in SEX
cells?
MEIOSIS Cell division resulting in 4 gamete
cells, each containing HALF of the parental
cells genetic material.
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5 PHASES OF CELL CYCLE MITOSIS
ACRONYM IPMAT
I INTERPHASE (NOT part of mitosis)
P PROPHASE 1st and longest phase of
mitosis.
M METAPHASE 2nd phase.
A ANAPHASE 3rd phase.
T TELOPHASE 4th phase.
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When does Mitosis occur?
Interphase (G1, S, G2)
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I INTERPHASE
Visible Nucleolus
Nucleus (unable to see
chromosomes BUT they are currently
REPLICATING!)
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P PROPHASE
Chromosomes condense or become visible
Nuclear envelope nucleolus disappear
Spindle fibers develop from centrioles
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M METAPHASE
Sister chromatids line up on equator of cell with
help from spindle fibers.
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Short Quiz Mind around Mitosis?
A.
B.
C.
Acronym for cell cycle and mitosis?
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A ANAPHASE
Chromosomes (sister chromatids) are split and
pulled to opposite ends of the cell by ______
______attached to a __________.
spindle
fibers
centriole
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T TELOPHASE
Two daughter cells are formed
New double membrane begins to form between 2
nuclei.
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Mitosis Madness Quiz
A.
E.
C.
D.
B.
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Bonus Question
What phase of mitosis is shown in this
background slide? Explain your answer.
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Way to go Mitosis Minds!! Job well done!!