What are we
learning today?
1. What are the phases of mitosis
and what happens during each
phase?
2. What is the significance of
mitosis to asexual
reproduction?
Mitosis
Cell division
Cell division:
process by which
cells divide to
produce new cells.
The two cells are
identical to the
original
cell.(parent cell)
The new cells are
called daughter
cells
Cell Cycle
Liver Cells
Cell Type
Red blood
cell
Platelet
Bone cells
Brain cells
Colon cells
Skin cells
Stomach
cells
Lifespan
Cell
Lifespan
As an
organism
grows and
changes,
new cells
are being
produced as
old ones are
dying.
Cell Type
Red blood
cell
Platelet
Bone cells
Brain cells
Colon cells
Skin cells
Stomach
cells
Lifespan
120 days
Cell
Lifespan
As an
organism
grows and
changes,
new cells
are being
produced as
old ones are
dying.
Cell Type
Red blood
cell
Platelet
Bone cells
Brain cells
Colon cells
Skin cells
Stomach
cells
Lifespan
120 days
10 days
Cell
Lifespan
As an
organism
grows and
changes,
new cells
are being
produced as
old ones are
dying.
Cell
Cell Type
Lifespan
Lifespan
Red blood
120 days
As an
cell
organism
Platelet
10 days
grows and
Bone cells 25-30 years
changes,
Brain cells
new cells
are being
Colon cells
produced as
Skin cells
old ones are
Stomach
dying.
cells
Cell
Cell Type
Lifespan
Lifespan
Red blood
120 days
As an
cell
organism
Platelet
10 days
grows and
Bone cells 25-30 years
changes,
Brain cells
Lifetime
new cells
are being
Colon cells
produced as
Skin cells
old ones are
Stomach
dying.
cells
Cell
Cell Type
Lifespan
Lifespan
Red blood
120 days
As an
cell
organism
Platelet
10 days
grows and
Bone cells 25-30 years
changes,
Brain cells
Lifetime
new cells
are being
Colon cells
3-4 days
produced as
Skin cells
old ones are
Stomach
dying.
cells
Cell
Cell Type
Lifespan
Lifespan
Red blood
120 days
As an
cell
organism
Platelet
10 days
grows and
Bone cells 25-30 years
changes,
Brain cells
Lifetime
new cells
are being
Colon cells
3-4 days
produced as
Skin cells 19-34 days
old ones are
Stomach
dying.
cells
Cell
Cell Type
Lifespan
Lifespan
Red blood
120 days
As an
cell
organism
Platelet
10 days
grows and
Bone cells 25-30 years
changes,
Brain cells
Lifetime
new cells
are being
Colon cells
3-4 days
produced as
Skin cells 19-34 days
old ones are
Stomach
2 days
dying.
cells
Cell Cycle
Cells undergo a
period of growth
and a period of
division.
The majority of the
cell’s life is spent in
Interphase
During interphase, a
cell grows in size,
and carries on
metabolism
During interphase,
the DNA is in the
form of chromatin.
Chromatin is long
stringy strands of
DNA.
The long strands
allow the DNA to be
read
The DNA is
replicated during
interphase (copied)
Cell cycle
Mitosis
Mitosis: a period
of nuclear cell
division.
Two daughter cells
are formed each
with a complete
set of
chromosomes.
Chromosomes
Chromosomes:
long, tightly
coiled strands of
DNA
Carry genetic
information
which is passed
from parent to
daughter cell
After being
replicated, the
chromosome is
made of 2
sister
chromatids
held together
by a
centromere.
Chromosomes
Prophase
Prophase: first and
longest phase of
mitosis
Chromatin coils
into visible
chromosomes
The nuclear
envelope
disintegrates.
Centrioles
move to
opposite sides
of the cell
Spindle fiber
forms between
them.
Prophase
 Name the
parts of the
cell in
prophase
a. Chromosome
b. Centriole
c. Spindle fiber
d. Nuclear
membrane
Prophase
Metaphase
Metaphase: 2nd
phase.
Mitotic spindle is
completely formed,
connecting the
centrioles.
Chromosomes
attach to the
spindle.
Chromosomes line
up along the
middle.
Anaphase: 3rd
Phase
The two
centromeres of
the chromosome
split apart
Chromatid pairs
separate and are
pulled to the
opposite sides.
Anaphase
Telophase
Telophase: 4th
Phase
Chromatids reach
the opposite sides.
Spindle fibers
break down.
Nuclear envelope
forms
Chromosomes
unravel
Cytokinesis:
separation of
cytoplasm after
telophase
New cell
membrane
forms
Two daughter
cells formed.
Cytokinesis
Name the phase.
Metaphase
How do you know?
Metaphase
Does anything else happen during
this phase?
Metaphase
Name the phase.
Prophase
How do you know?
Prophase
Does anything else happen during
this phase?
Prophase
Name the phase.
Telophase
How do you know?
Telophase
Does anything else happen during
this phase?
Telophase
Name the Phase.
• Anaphase
How do you know?
• Anaphase
Does anything else happen during
this phase?
• Anaphase
Results of Mitosis
Genetic continuity – two cells which are
identical to the parent cell
Cells that are alike can work together
to perform a specific task.
Cell Tissue Organ Organ system
No matter how complex
the system, the cell is the
basic unit of life
What order?
How can I remember
what order they go in?
P
M
A
T
Prophase, Metaphase,
Anaphase, Telophase…
What are we
learning today?
1. What are the phases of mitosis
and what happens during each
phase?
2. What is the significance of
mitosis to asexual
reproduction?