Cell Cycle
Which of the following begins when pairs of sister chromatids align in the center of the cell?

Metaphase
Prophase
Anaphase
Interphase

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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
a series of checkpoints
time (after a certain length of time the cell divides)

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

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

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