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1. Where are the checkpoints in the cell division cycle and what are they called?
The cell division cycle consists of the reproduction of a pair of two daughter cells that are genetically identical. For this to occur, DNA must be duplicated and its products segregated into the nuclear spaces of the two daughter cells.
The cell cycle has four phases:
1. S Phase; Where chromosomes duplicate.
2. M phase: chromosome segregation sequence occurs.
These two phases are separated by two gap phases or periods of growth;
3. G1 phase, which occurs at the beginning of the cycle after M phase,
4. G2 phase, which occurs before M phase.
The cell Cycle processes are regulated by a series of multipurpose controls called check points. …
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