what is cell division? explain it with the help of diagram
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Answer:
This follows the page about what is mitosis - explaining its position in the sequence of processes that form the "cell cycle"
Definition: Mitosis is defined as the type of cell division by which a single cell divides in such a way as to produce two genertically identical "daughter cells". This is the method by which the body produces new cells for both growth and repair of aging or damaged tissues throughout the body - as opposed to for sexual reproduction (when meiosis applies).
Mitosis is the simplest of the two ways (mitosis and meiosis) in which the nucleus of a cell can divide - as part of a process of whole cell division. The four stages of mitosis (prophase, metaphase, anaphase and telophase) are illustrated and described below.
Mitosis (Nuclear Division)
0. Interphase
Interphase is not part of mitosis but is included here as a reminder that interphase preceeds mitosis. (Hence, it has the number 0.)
Chromatin is material in a cell nucleus consisting of DNA and protein. This is the substance that chromosomes are made from. It can be stained with dyes in order to watch the process of mitosis using a microscope.
1. Prophase
Early in the prophase stage the chromatin fibres shorten into chromosomes that are visible under a light microscope. (Each prophase chromosome consists of a pair of identical double-stranded chromatids.)