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Mitosis Worksheet

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Mitosis Worksheet
7.1 How Long Does the Cell Stay in Each Phase of Mitosis?
You can estimate the relative amount of time each cell spends in each mitotic phase (as
well as in interphase) by counting the number of cells observed in each phase. Count the
number of cells in each phase in one field of view under 400× (image provided on the next
page). Tally the number of cells in each phase in the table below the slide image on the next
page.
Because the cross section of a given cell may not have been through the area of the
nucleus or the spindle, only count cells that have a clearly defined nucleus (for interphase) or
cells in which you clearly see stained chromosomes (for prophase, metaphase, anaphase, and
telophase).
Illustrated example:

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