Mitosis



Stages of Mitosis:

*Interphase is the first and longest stage of mitosis. It's where the chromosomes duplicate and reproduce, while attaching to the centromere.
 * Prophase is the second stage of mitosis. This is where the chromosomes start to become visible. Then the centrioles move to the sides of the cell, and spindle fibers move to the ends of the cell.
 * Metaphase is the third stage of mitosis. This is where the chromosomes line up in the center of the cell. This is called the metaphase plate. Next each centromere attaches to two spindle fibers.
 * Anaphase is the fourth stage in mitosis. This is where the chromosomes move apart to the sides of the cell.
 * Telephase is the fifth stage of mitosis. Here the spindle fibers disappear. The chromosomes untwist, and become harder to see. Each set of chromosomes develop their own nuclear membrane to create a new nucleus.
 * Cytokines is the 6th and last stage of mitosis. Here, the cell membrane splits and makes 2 new cells. Now these cells will replace the dead or damaged cells.

Questions:

1) What is produced during mitosis? A.During mitosis, one parent cell goes through a process of forming two daughter cells with the same exact amount of chromosome s and genetics as the first original parent cell.

2) Why must body cells go through mitosis? A.Body cells go through mitosis to help an organism grow and develop, to repair damaged cells, and to replace dead cells. Without mitosis, none of these things could happen to an organism!

3) Mitosis occurs in a step-by-step sequence. Predict what would happen if a step was missed or the sequence got out of order. A. If a step in mitosis was missed or the sequence got out of order, then the parent cell would not be able to produce two exact daughter cells because it wouldn't have accomplished all its steps. In mitosis, the two daughter cells are identical to the parent cell. If a step in mitosis were to be missed, this would not be able to happen. Each process of mitosis is important, and they're all necessary for an organism to survive properly.