The sister chromatids of a chromosomes are joined at

Chromocentre

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Centromere

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Satellite

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Telomere

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Solution

The correct option is A Centromere
The centromere is a region of DNA that joins the sister chromatids. It brings about the attachment of a chromosome to the spindle fiber and is responsible for the movement of the replicated chromosomes into the two daughter cells during mitosis and meiosis. Thus the correct answer is option B.

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