2. Interphase
Cell is carrying out all life functions
plus storing energy for mitosis
Each chromosome is duplicated which
forms chromatids
Chromatids: identical copies of a
chromosome, held together at
centromere
3. Prophase
1st phase of Mitosis
Nuclear membrane dissolves
Chromosomes condense and start to
move towards center of cell
Centrioles move to opposite sides of cell
Mitotic spindle fibers form between the
centrioles
4. Metaphase
2nd Stage of Mitosis
Mitotic spindle fibers attach to the
centromeres of each pair of
chromosomes
The chromosomes are lined up along
the equator of the cell
5. Anaphase
3rd Stage of Mitosis
Chromatids separate at the
centromere
Each chromatid is pulled to a pole of
the cell by the mitotic spindle fibers
6. Telophase
Last Stage of Mitosis
Nuclear membranes form around the
two sets of chromosomes
Chromosomes unwind
Mitotic fibers disappear
Mitosis is now complete
7. Cytokinesis
Eukaryotic cells without a cell wall, cell
membrane pinches inward and
eventually all the way through to form
the two daughter cells
In eukaryotic cells with a cell wall, a
cell plate forms in the middle of the
cell to divide the two cells.
8. What Did You Learn?
How are binary fission and mitosis
similar? How are they different?
Why is it important for chromosomes
to be copied before cell division?
What would happen if cytokinesis
occurred without mitosis?
