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Question

The movement of chromosomes to the opposite poles during cell division takes place

A
When the centrioles replicate
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B
After the nuclear membrane disintegrates
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C
Immediately following DNA replication
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D
When the DNA condenses
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E
Immediately after the centromere splits
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Solution

The correct option is E Immediately after the centromere splits
DNA and centriole replication occur during S phase of cell cycle. Condensation of DNA leading to the presence of visible chromosome and nuclear membrane disintegration occur during prophase. This is followed by movement and arrangement of sister chromatids joined together by centriole on the cell's equator. Anaphase is marked by splitting of centriole leading to separation of sister chromatids and their movement to opposite pole.
So, the correct answer is option E.

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