Search words: mitosis, cell division, lab lesson plan, chromosomes

In this lab, we will grow onions, and use the cells from the root tip to make our chromosome squash slide. Cells in the root tip are rapidly dividing by mitosis in order to make the root grow in length.

Purpose: (1) To learn the technique of making chromosome squashes. (2) To observe chromosomes in recently living cells. (3) To determine if the rate of cell division correlates with the growth of the plant.

Your download will include Title, Purpose, Introduction, Materials, Safety Precautions, Procedure, Analysis Questions, Student Data Pages, Answers to all Questions, and Teacher Preparation Notes.

Materials: Onion sets Toothpicks
Plastic cups Razor blades
70 % isopropyl alcohol Test tubes
Rubber stoppers Microscope slides
Cover slips Microscopes
Syracuse dishes Hydrochloric acid
95% Ethyl alcohol Carnoy's solution
Stopwatch Aceto - orcein stain
Forceps

NOTE: This lab requires solutions that are potentially dangerous and must be handled with care.

You will receive both an editable Word document and a pdf form of the lab.

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