During cell division, the spindle fibres attach to the chromosome at a specific region. What is this region called?

1. The two arms of a chromosome meet at a point called the primary constriction. 2. This point is the centromere. 3. The spindle fibres attach to the chromosome at the centromere during division. 4. The telomere is the protective end of the chromosome, not the attachment point, which rules out option B. 5. So the answer is centromere, option A. _Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 18 Genetics "Structure of a Chromosome", p.272_