A) tubulin
B) actin
C) myosin
D) collagen
Correct Answer: A
Solution :
Spindle fibers are formed during cell division. These are made up of tubulin. Each tubulin molecule is made up of \[\alpha \] and \[\beta \]sub units. Tubulin molecules are attached head to tail and form a strand and 13 stramk aggregate to form a microtubule. These microtubules are attached to kinetochores of metaphase chromosomes and play an important role in the movement of chromosomes during subsequent stages of cd division.
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