Mitosis notes

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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:


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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