MITOSIS OR INDIRECT NUCLEAR DIVISION 



63 



Mitosis ends with the telophase. A new cell wall forms on the 

 spindle, midway between the two daughter nuclei. It divides 

 the cell into two parts, in each of which a nucleolus now appears. 



Problem. Study of mitosis. Study of prepared slides of Ascaris 

 under the microscope. 



I. Select a good example of the anaphase stage. 



A. How does the slide differ from the diagrammatic drawings ? 



B. What causes you to identify it as an anaphase stage ? 



II. Identify any other stage of mitosis present in your specimen. 



III. Make an outline drawing of three different cells seen through the micro- 

 scope. 



IV. Alongside of each drawing, copy and label the diagram of the phase 

 which most nearly resembles the viewed cell. 



A very similar process takes place in plant cells. Centrosomes 

 are lacking. The spindle forms from material which is probably of 



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A group of cells of a plant showing various stages in the mitotic division of the cells. Com- 

 pare and contrast this series with the diagrams showing mitosis of an animal cell. 



