Wednesday, November 3, 2010

Mitosis

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?: Four

-- 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?: The centrioles divide during mitosis

3 . Identify the stages of these cells: The first stage in the drawing is Metaphase, the second one is Cytokinesis, and the third one is Prophase.

Prophase- The centrioles move to the opposite sides of the cells. The chromatin condenses into chromosomes and the nucleus dissipates.

 Metaphase- The spindle threads attach to the chromosomes.

 

 Telophase- The nucleus reform, the chromosomes distribute, and the spindle threads disintegrate. Cytokinesis takes place.

 

 
Interphase Prophase Metaphase Anaphase Telophase Total

Number of cells 20 10 3 2 1 36



Percent of cells 56% 28% 8% 6% 2% 100%





View 1 View 2 View 3 View 4 View 5

Whitefish telophase Prophase Metaphase Anaphase


Onion Prophase Metaphase Interphase Cytokinesis Telephase

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