NEET 2011 Biology question

At metaphase, chromosomes are attached to the spindle fibres by their:

(1)Satellites
(2)Secondary constrictions
(3)KinetochoresCorrect
(4)Centromere

Answer: (3)

Solution

At metaphase the chromosomes line up on the equatorial plate and spindle fibres (microtubules) attach to each chromosome at the kinetochores, disc-shaped protein structures present on either side of the centromere of each chromatid. The centromere is the primary

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Question ID VK-090700