Mitosis Count Lab

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Mitosis Count Lab

• A Guide

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Onion Root Tip(medium power)
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Onion Root Tip Cells (High Magnification)A cell
in late ANAPHASE is seen at (a), while (b)
indicates a PROPHASE nucleus and (c)
anINTERPHASE nucleus that has not yet begun to
divide.
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Help Me ID These!
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Questions for Discussion

• What stage will most cells be in?
• Why do we look at an onion root tip to view
  mitotic cells?
• What does the term field of view mean?
• How many fields of view will you need to get 100
  cells?

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A typical field of view
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Creating the Cell Cycle Pie Graph

• Create a pie graph of how many (what percentage
  of the total of cells- there are 18) of each
  phase of the cell cycle (Interphase, Prophase,
  Metaphase Anaphase and Telophase)are in the photo
  in the next slide
• Create a table to summarize your counts for each
• You may use a calculator
• Repeat for slide 6

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