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  1. Mitotic spindle is mainly composed of which protein?
    1. Actin
    2. Myosin
    3. Tubulin
    4. Myoglobin
Correct Option: C

Mitotic spindles are composed of microtubules which are made of tubulin dimers. Actin and myosin are the contractile proteins of muscle fibres. Myoglobin is oxygen carrying pigment found in muscle.


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