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Question

Spindle fibre attaches onto:

A
Telomere of the chromosome
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B
Kinetochore of the chromosome
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C
Centromere of the chromosome
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D
Kinetosome of the chromosome
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Solution

The correct option is B Kinetochore of the chromosome
The kinetochore is the structure where the spindle apparatus attaches to a chromosome during cell division (mitosis and meiosis) in eukaryotes. It is usually located in or near the centromere.

A telomere is a region of repetitive nucleotide sequences at each end of a chromosome, which protects the end of the chromosome from deterioration or from fusion with neighbouring chromosomes.

The centromere is a special region of a chromosome, usually near the middle. It is where the chromatids stay in contact as the chromosome attaches to the spindle during cell division.

A basal body/kinetosome is a protein structure found at the base of a eukaryotic undulipodium (cilium or flagellum).

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