Download Mitosis

What is Mitosis?
• Mitosis: Cell division
involving somatic (nonsex) cells
• Involves only diploid cells
• Form of asexual
reproduction for some life
(bacteria & protista, fungi)
• End Result: Two
genetically identical
“daughter cells”
The Cell Cycle
• Defined:
Repeating set of
events in the life
of a cell
• 1) Interphase
– G1, S, G2
2) Prophase
3) Metaphase
4) Anaphase
5) Telophase
mitosis
•
•
•
•
Interphase
• Divided into 3 Stages:
• G1 Stage
– Normal function
performed
– Cell growth
– Organelles created
• S Stage
– Chromatin (DNA
strands) duplicated
• G2 Stage
– Cell growth
– Normal function
performed
Mitosis
A Quick Overview
Prophase
• 1st Mitosis Stage
• Chromatin (DNA
strands) coils into
chromosomes
• Nuclear envelope
dissolves
(nucleus)
• Spindle fibers
form between
centrioles
Metaphase
• 2nd stage of
mitosis
• Spindle fibers
attach to
centromere of
chromosome
• Spindle fibers pull
chromosomes to
cell equator
Anaphase
• 3rd stage of mitosis
• Sister chromatids
separate
• Spindle fibers pull
sister chromatids
to opposite ends
– Humans: 46
chromatids each
way
Telophase
• 4th stage of mitosis
• Spindle fibers
dissolve
• Chromatids unwind
into chromatin
• Nucleus reforms
• Cytokinesis:
division of the
cytoplasm
Mitosis: An Animated Video
Mitosis in a Real Cell
Name that Stage!
Hint:
Chromosomes
are aligned in
middle of cell
Name that Stage!
Hint:
Cell plate is
splitting the cell
Name that Stage!
Hint:
Two normal
looking nuclei of
two cells
Name that Stage!
Hint:
Chromosomes
are forming and
the nucleus is
gone
Name that Stage!
Hint:
Chromatids are
being pulled
apart
Kobe Kuiz
1) In order, name the 5 stages of the cell cycle.
2) Pick a stage of the cell cycle. Name two things that happen in this
stage.
3) Review the picture slides. Identify the stages based on the picture.
4) The division of the cytoplasm is called _____.
5) Which cells divide by mitosis?
6) During which interphase stage is DNA created?
7) During which stage do spindle fibers form?
8) During which stage are chromosomes aligned in the middle?
9) During which stage are chromatids separated?
10) During which stage does the nucleus dissolve?
Name this stage of the cell cycle.
Name this stage of the cell cycle.
Name this stage of the cell cycle.
Name this stage of the cell cycle.
Name this stage of the cell cycle.
Name this stage of the cell cycle.
Name this stage of the cell cycle.
Name this stage of the cell cycle.
Name this stage of the cell cycle.
Name this stage of the cell cycle.
Name this stage of the cell cycle.
Name this stage of the cell cycle.
Name this stage of the cell cycle.