Mitosis notes

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Mitosis

Mitosis produces two daughter cells that have the same number of chromosomes as the parent cell and each other.

Mitosis is division of a cell that results in each of the daughter cells having an exact copy of the DNA of the parent cell. Except in the rare event of a mutation, the genetic make-up of the two daughter nuclei is also identical to that of the parent nucleus. Mitosis is always proceeded by a period during which the cell is not dividing. This period is called interphase. It is a period of considerable cellular activity that includes a very important event, the replication of DNA. The two copies of DNA after replication remain joined at a place called the centromere. Although mitosis is a continuous process, it can be divided into four stages for convenience:

Prophase

In prophase, the chromosomes first become visible, initially as long thin threads, which later shorten and thicken. Animal cells contain two cylindrical organelles called centrioles, each of which moves to opposite

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