AP Exam preparation -- Doing the AP version of this lab:
Please read through the AP Labortory Manual, Laboratory #7, Cell Division: Mitosis and Meiosis. If you have access to the equipment and materials used in the lab, please perform the lab as indicated in the Manual. Complete the Lab Manual worksheets and submit your data to the Moodle Biology Website for comparison with the work of your fellow students.
If you are unable to obtain all the equipment and materials required by Investigation #7, you may perform the following alternate lab that uses more readily accessible materials to accomplish the same goal. However, since you should be familiar with the AP Lab as designed, please review that investigation in your lab book.
Perform Illustrated Guide to Home Biology Experiments, Lab IV-3, Procedure 1. This lab assumes that you have a professionally prepared mitosis slide. If you do not, use the instructions below to make your own mitosis slide.
NOTE: A more detailed version of this experiment is described at Caroline Biological Supply's site on Mitosis.
Using your self-made slides, perform the following observations. If possible, obtain commercially prepared slides for onion root tips and whitefish blastual, and repeat the same observations.
Based on the proportions of cells in each stage, what can you infer about the relative length of time an onion root tip spends in each state of mitosis?
Your report should contain a description of your procedure and a verbal description of your observations, as well as your data tables, any analysis you performed, and conclusions you draw.
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