NEET 2016 Biology question

Spindle fibres attach on to:

(1)Telomere of the chromosome
(2)Kinetochore of the chromosomeCorrect
(3)Centromere of the chromosome
(4)Kinetosome of the chromosome

Answer: (2)

Solution

Each chromosome has a primary constriction, the centromere, on the sides of which disc-shaped protein structures called kinetochores are present; the spindle (chromosomal) microtubules attach to the kinetochores during prometaphase/metaphase (NCERT, Cell Cycle and Cell Division). Hence

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Question ID VK-091939