Mitosis Virtual Lab

On the left side of the screen is a navigation bar, click on the link to “MITOSIS”

Read the text on this page and view the animation, you can slow down the video by clicking step by step through the phases.


1. Which stage does the following occur

Chromatin condenses into chromosomes	Prophase
Chromosomes align in center of cell.	Metaphase
Longest part of the cell cycle.	Interphase
Nuclear envelope breaks down.	Prometaphase
Cell is cleaved into two new daughter cells.	Cytokinesis
Daughter chromosomes arrive at the poles.	Telophase

Watch the video carefully.

2. The colored chromosomes represent chromatids. There are two of each color because one is an exact duplicate of the other.

--How many chromosomes are visible at the beginning of mitosis? 8
-- How many are in each daughter cell at the end of mitosis? 4

--The little green T shaped things on the cell are: Microtubules

-- What happens to the centrioles during mitosis? They divide.

3 . Identify the stages of these cells:

Metaphase Telophase Interphase

Another Mitosis Animation

Go to www.johnkyrk.com/mitosis.html

View the animation and sketch the cell in:

Prophase During prophase the nuclear dissolves and the microtubules start to move.

Metaphase During metaphase spindle fibers attach to the chromosomes.

Telophase During telophase the daughter chromosomes are pulled to the poles of the cell.

Onion Root Tip - Online Activity

http://www.biology.arizona.edu/cell_bio/activities/cell_cycle/cell_cycle.html

Read the introduction, then click the “next” button.

You will have 36 cells to classify. When you’re finished, record your data in the chart below.

	Interphase	Prophase	Metaphase	Anaphase	Telophase	Total
Number of cells	20	10	3	2	1	36
Percent of cells (calculate: number of cells divided by total cells x 100 )	67%	34&	10%	6%	1%	100 %

Did you forget a calculator -- no problem. Go to www.calculator.com and click on the “fractions” calculator. A window with a virtual calculator will open and you can do the math from there.

Mitosis in Whitefish & Onion Roots

http://www.biologycorner.com/flash/mitosis.html

For each organism, identify the stage of mitosis.

	View 1	View 2	View 3	View 4	View 5
Whitefish	Cytokinesis	Metaphase	Interphase	Telophase	No Picture
Onion	Prophase	Metaphase	Interphase	Cytokinesis	Telophase