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| Types of Cell Division |
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| Cell division is a method by which new cells are originated from pre-existing cells. The formation of daughter amoebae in amoeba, the development of sex cells and the growth of a young animal or plant into an adult, all involve cell multiplication. In order to multiply in number, cells undergo cell division: one divides into two, two into four, four into eight and so on. |
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| To understand cell division, we must realize that chromosomes occupy a central position. They determine the characteristics of the cell, and it is important that they are correctly distributed between the daughter cells. A cell has a fixed number of chromosomes. |
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| Example: |
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| Man has 46 chromosomes, and these occur in pairs i.e., diploid condition. |
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| Two types of cell divisions take place |
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 MITOSIS (Diploid division) |
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 MEIOSIS (Haploid division) |
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The Fundamental Unit of Life
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