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Discussion

The spindle fibres attach to a chromosome at the

  • A.nucleolus
  • B.kinetochore
  • C.telomere region
  • D.chiasma point

Answer: B

This protein structure assembles on the centromere and captures microtubules from a pole. Each sister chromatid has its own, which is how the two come to be pulled in opposite directions. Attachment at the kinetochore is what the spindle checkpoint monitors.

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