Self Assessment Answer # 2 for Lesson 3 by Dr Jamie Love 2002 - 2005

Prophase is the first phase in nuclear division. The chromosomes condense from the diffuse chromatin and the nuclear membrane breaks down.

In late prophase (prometaphase) the centrosomes start to move to opposite poles and grow spindles. The chromosomes become attached to the centrosomes via the spindle fibers attached to the kinetochores on each chromosome. This attachment allows the chromosomes to get tugged around as they work towards metaphase.

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