Cell Cycle
Which of the following statements about mitosis is incorrect?

Chromosomes separate during anaphase when the kinetochore microtubules shorten as they depolymerize
Chromosomes separate during anaphase due to the interaction of polar microtubules from opposite poles pushing against each other
The daughter nuclei are genetically identical to the parent nucleus
Chromosomes move to the metaphase plate using motor proteins, a kind of kinesin, attached to spindle fibers

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Cell Cycle
The cell cycle is controlled in most cells by

cell size (when the cell reaches a certain size, it divides)
different cells exhibit different control strategies
time (after a certain length of time the cell divides)
a series of checkpoints

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