Which of the following constituent protein are present in mitotic spindle?

Tubulin

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Myosin

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Tropomyocin

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Dynein

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Solution

The correct option is A Tubulin
The mitotic spindle is made up of the protein tubulin. A spindle fiber consists of 4-20 microtubules formed of the protein tubulin. It is a cytoskeleton protein composed of two types of subunits called as $α$ and $β$ subunits.
So, the correct answer is option A.

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