Allium onion root tip at 400 x magnification

Allium (onion) root tip at 400 x magnification:

FUNYUNS® root tip at 400 x magnification:

Observing Mitosis Lab n CRS skills: ¡ ¡ ¡ Compare or combine data from a simple data presentation (e. g. , order or sum data from a table) IOD 402 Identify and/or use a simple (e. g. , linear) mathematical relationship between data IOD 505 Analyze given information when presented with new, simple information IOD 506

Observing Mitosis Lab Essential question: How do living things grow? Pre-lab questions: complete in your notebook. 1. 2. 3. 4. 5. What are the 4 phases of mitosis? List the visible characteristics of each phase. Cells that are not in one of the phases of mitosis are in either G 1, S, G 2 or G 0. a. What is the general term for all of these phases? b. Is it possible to distinguish what phase of the cell cycle a cell is in if it is not in mitosis? Explain. Describe both the root cap and meristem of an onion root tip List the possible dangers associated with the lab and how we will protect ourselves.

Observing Mitosis Lab - Part 1 Identifying the phases of Mitosis - procedure 1. 2. 3. 4. 5. Working with your partner, collect a microscope and a prepared root tip slide. Carefully place the slide on the microscope stage and focus in on one root tip starting at low magnification and eventually at 400 x Follow steps 1 through 5 from part A on Pages 168 and 169. Complete all work in your lab notebook, including Table A. CLEAN UP AND RETURN YOUR SLIDE AND THE MICROSCOPE

Observing Mitosis Lab - Part 2 n Data calculation – procedure 1. Follow steps 6 through 10 from part B on Pages 168 and 169. Complete all work in your lab notebook. 2.

Observing Mitosis Lab – Part 3 n 1. 2. 3. Analysis and Conclusion Make sure that your table is cleaned up completely – microscope away and slides returned. In your notebook, complete questions analysis and conclusion questions 2 -6 on page 169. Stretch Extra Credit Questions: Complete Further Inquiry questions 1 and 2.