Mitosis

1. Which stage does chromatin condense into chromosomes?
Prophase


Which stage does chromosomes align in the center of the cell?
Metaphase


Which stage is the longest past of the cell cycle?
Interphase


Which stage does the nuclear envelope break down?
Prometaphase


Which stage does the cell cleave into two new daughter cells?
Anaphase


Which stage do daughter chromosomes arrive at the poles?
Telophase

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: Centrioles

-- What happens to the centrioles during mitosis? They move to opposite sides of the cell

3. Identify the stages of these cells:

           Prometaphase  Cytokinesis  Prophase

View the animation and sketch the cell in:

Prophase The centrioles move to opposite sides of the cell.

Metaphase Spindle fibers attach to chromosomes.

Telophase The cell splits into two daughter cells.

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 )	56%	28%	8%	5%	3%	100 %

	View 1	View 2	View 3	View 4	View 5
Whitefish	Telophase	Metaphase	Prometaphase	Anaphase
Onion	Metaphase	Prometaphase	Interphase	Interphase	Telophase