Mitosis Data and Calculations Biology Lab Worksheet

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Mitosis Worksheet

For each stage of mitosis, label the stage with the name,draw the configuration of two sets of chromosomes and spindle fibers, then below your drawing list the things that happen for the stage. You can work with other students in the class, but you must do your own drawing. When you are done, upload the drawing for your instructor to check.

Table 1: Mitosis Data and Calculations


  Interphase Prophase Metaphase Anaphase Telophase
Number of cells in stage


Mitotic Index =

# Cells Dividing /

Total # cells Observed



Which phase of mitosis has the longest duration in this organism? How do you know?


Which of the phases of mitosis has the shortest duration in this organism? How do you know?

Which phase is longer overall, mitosis or interphase? How do you know?

If you were to assume that the total cell cycle time for these cells was 16 hours, use the information in your table to determine how much time would be spent in each of the 5 phases (interphase, prophase, metaphase, anaphase & telophase).


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