The nuclear spindle consists of

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(B) The nuclear spindle (mitotic spindle) is primarily composed of two types of microtubules: $1$. Kinetochore microtubules: These attach to the kinet

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Two types of fibres

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(B) The nuclear spindle (mitotic spindle) is primarily composed of two types of microtubules: $1$. Kinetochore microtubules: These attach to the kinetochores of the chromosomes. $2$. Polar (or non-kinetochore) microtubules: These extend from the poles towards the equator and overlap with each other to maintain the shape of the spindle. Therefore,the spindle consists of two types of fibres.

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