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Mitosis
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2. The Cell Cycle
During the cell cycle, a cell grows, prepares for division, and divides to form two daughter cells, each of which begins the cycle again.
Consists of four stages: G1 S G2
Mitosis

3. Cell Division and Definitions
Before cell division begins, each cell must copy its DNA so that each daughter cell gets a complete copy of the genetic information.
Mitosis: division of cell nucleus
Cytokinesis: division of cytoplasm
Chromosomes carry genetic information; made of DNA
Not visible in most cells until cell division

4. Mitosis Occurs in ALL eukaryotic cells except sex cells
Broken down into the following stages:
Interphase
Prophase
Metaphase
Anaphase
Telophase

5. Interphase
G1: growth phase
S: chromosomes replicate
G2: growth phase

6. Prophase Chromatin condenses into chromosomes
Centrioles separate and a spindle begins to form
Nuclear envelope breaks down

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

8. Anaphase
Sister chromatids separate into individual chromosomes and are moved apart.

9. Telophase
Chromosomes gather at opposite ends of the cell and lose their distinct shapes
2 nuclear envelopes form

10. Cytokinesis The cytoplasm pinches in half
Each daughter cell has an identical set of duplicate chromosomes.
Animal cell pinches.
Plant cell has a cell plate form between the two.