Mitosis

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
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? 0
-- How many are in each daughter cell at the end of mitosis?4
--The little green T shaped things on the cell are: daughter chromosomes
-- What happens to the centrioles during mitosis? They divide
3 . Identify the stages of these cells:
a)metaphase
b)telophase
c)prophase
4. View the animation and describe the stages:
Prophase: Daughter chromosomes moving to either end of the splitting cell, and the chromosomes have begun to divide.
Metaphase: The daughter cells are pulling ht Roth chromosomes towards them to become their own cell.
Telophase: About to become their own cells, the daughter cells put up a barrier between them.

5. 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 )	55.55%	27.77%	8.33%	5.55%	2.77%	100 %

6. For each organism, identify the stage of mitosis.

	View 1	View 2	View 3	View 4	View 5 (Onion Only)
Whitefish	Cytokinesis	Interphase	Prophase	Anaphase
Onion	Anaphase	Metaphse	Interphase	Interphase	Telophase