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Cell Division - Coggle Diagram
Cell Division
Mitosis
Prophase
Chromatin starts to shorten and thicken to form a chromosome structure that made up of two identical threads called sister chromatids are joined at the
centromere. Nucleus membrane will disintegrates, the nucleolus disappears, the centriole moves to the opposite poles and spindle fibres start to form.
Metaphase
Centrioles are at the opposite poles of the cell. The spindle fibres maintain the chromosomes at the equatorial plane and become aligned in a single row. Metaphase ends when centromere begins to divide.
Anaphase
The centromere divides into two and the sister chromatids seperate. Spindle fibres shorten, contract and the sister chromatids are attracted to the opposite pole cells. Anaphase ends when the chromatid arrives at the pole of the cell.
Telophase
The chromatids that at the opposite poles are called daughter chromosome. Each pole contains one set of complete and identical chromosomes and shaped again as fine chromatin threads. Nucleoli are formed again when spindle fibre is disappear. Thus, new nucleus membrane is formed. End of this stage is followed by cytokinesis.
Cell Cycle (the sequence of events that involves DNA multiplication and cell division to produce two daughter cells)
Interphase
G1
Cell components and proteins synthesised during this phase. Nucleus looks big and the chromosome is in the form of chromatin.
S
DNA are synthesis and replicated in the nucleus. Sister chromatids contain the same copy of the DNA molecule and are joined at the centromeres.
G2
Cells continue to grow and remain active metabolically to gather energy and make final arrangements to enter the next stage of cell division.
M phase
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Cytokinesis (the division of cytoplasm that happens immediately after the nucleus is formed at the end of telophase)