วันจันทร์ที่ 29 สิงหาคม พ.ศ. 2554

3.24a Mitosis 1



- Mitosis - a form of cell division which results in growth. The growth occurs by an increase in the number of cells
- Begin with a normal cell with its nucleus. The number of chromosomes in the nucleus is known as the "Diploid" number = 2n,
- For humans, 2n = 46
- Cats, 2n = 38
- In the process, the cell will divide into 2 cells, each with a nucleus. Each of the nucleus has a Diploid nucleus. These cells are identical (or daughter cells).
- Identical because:
1) Same number of chromosomes
2) Same set of chromosomes (meaning, if we choose one chromosome from one of the cells, another version of the same chromosome will be found in the other cell)
- The questions which rise from this process:
1) "How are the copies of chromosomes made?"
2) "How do they separate into the two cells?"


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