1. Phases of Mitosis

2. Learning Objectives
Describe what happens during the four phases of mitosis

3. Mitotic phase (M phase)
Mitosis - division of the cell nucleus
Cytokinesis - division of the cytoplasm

4. Mitosis Mitosis is divided into four phases: Prophase Metaphase
Anaphase
Telophase

5. Prophase Chromatin condenses into chromosomes.
Spindles
Centrioles
Nuclear Envelope
Chromatin condenses into chromosomes.
Centrioles separate and spindles begin to form.
Nuclear envelope breaks down.

6. Metaphase Chromosomes line up across the center of the cell.
Centromere
Spindles
Chromosomes line up across the center of the cell.
Each chromosome is connected to the spindle fiber at its centromere.

7. Anaphase
Spindles
Sister Chromatids
Paired chromosomes (sister chromatids) separate into individual chromosomes.
Spindle fibers move chromosomes to opposite ends of the cell.

8. Telophase Nuclear envelopes form around chromosomes
Chromatin
Nuclear Envelope
Nuclear envelopes form around chromosomes
Chromosomes uncoil into chromatin.

9. Cytokinesis
Cytokinesis - division of the cytoplasm. Two daughter cells with an identical set of chromosomes are formed.

10. YouTube Video
Mitosis
Amoeba Sisters

11. YouTube Video
Stages of Mitosis

12. YouTube Video
Mitosis

13. Stop Here