When two events occur at the same$$ time, is it appropriate to conclude that one is responsible for the$$ other?$$

Determine if the following statements about correlated events in cellular replication are true or false.

$1.$ Cyclin synthesis causes M phase to start.

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$$

False

True

$2.$ Chromosome condensation causes the formation of the mitotic spindle.

$$

$$

True

False

$3.$ The breakdown of the nuclear envelope causes MPF activity.

$$

$$

False

True

$4.$ Microtubule disassembly causes chromosomes to move apart during anaphase.

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$$

True

False