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Cell Cycle and Nuclear Divsion

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Presentation on theme: "Cell Cycle and Nuclear Divsion"— Presentation transcript:

1 Cell Cycle and Nuclear Divsion
Mitosis

2 Structures and Sequences
During Mitosis a number of changes take place These changes follow a logical sequence of events that allow the division of DNA into two equal, genetically identical portions There are a number of cell structures that bear watching

3 Important structural components
The DNA must replicate itself The chromosomes must condense and re-extend The nuclear envelope must disintegrate and reform The centriole must divide and migrate (in animal cells, plants lack centrioles) The spindle must form and disintegrate The cytoplasm must divide

4 Chromosomes must: Replicate Condense Attach to the spindle
S phase of interphase Condense Prophase Attach to the spindle Prometaphase Align in the middle of the spindle Metaphase Divide and migrate to opposite poles Anaphase Extend Telophase

5 Duration and Frequency

6

7 Interphase

8 Interphase

9 Prophase

10 Metaphase

11 Anaphase

12 Telophase


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