Describe the different stages in Mitosis

1. MITOSIS
• Mitosis is a process of nuclear division in
which the duplicated chromosomes split to
form two genetically identical daughter
nuclei.

4. INTERPHASE: Genetic material and Centrosomes are replicated.

5. Prophase - The first stage of mitosis.
The chromosomes condense and become visible.
The centrioles form and move toward opposite ends of the cell ("the poles").
The nuclear membrane dissolves.
The mitotic spindle forms (from the centrioles in animal cells)
Spindle fibers from each centriole attach to each sister chromatid at the
kinetochore

6. • Metaphase
• The Centrioles complete their migration to
the poles.
• The chromosomes line up in the middle of
the cell ("the equator") : Metaphase Plate.

7. • Anaphase
• Spindles attached to kinetochores begin to
shorten.
• This exerts a force on the sister chromatids that
pulls them apart.
• Spindle fibers continue to shorten, pulling
chromatids to opposite poles.
• This ensures that each daughter cell gets
identical sets of chromosomes

8. • Telophase
• The chromosomes decondense.
• The nuclear envelope forms.
• The Mitotic spindles break down.
• Starts the Cytokinesis process.

9. Cytokinesis
• In animal cells:
• A cleavage furrow forms in the center of the cell. Under the membrane: Contractil
Rings. The cell stretches, thins out and separates into two ones.
• In plant cells is different because plant cells have cell walls.
• There is no cleavage furrow.
• During telophase, vesicles from the Golgi apparatus form a wall: Cell plate
which grows from the Center to the edge of the cell and divides the cytoplasm in two.

10. Cytokinesis
• In animal cells:
• A cleavage furrow forms in the center of the cell. Under the membrane: Contractil
Rings. The cell stretches, thins out and separates into two ones.
• In plant cells is different because plant cells have cell walls.
• There is no cleavage furrow.
• During telophase, vesicles from the Golgi apparatus form a wall: Cell plate
which grows from the Center to the edge of the cell and divides the cytoplasm in two.