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B
Cytoplasmic cleavage
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C
Crossing over
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D
Transcription
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Solution
The correct option is A Movement of chromosomes towards poles The centromere is the region of the chromosome where the sister chromatids join together. During cell division, the microtubules of the spindle attach to the centromere, via the kinetochore, during cell division. And they help in the movement of chromosomes towards the poles.