Taxol is an anticancer drug extracted from the Pacific yew tree. In animal cells, Taxol disrupts microtubule formation by bindin
g to microtubules and accelerating their assembly from the protein precursor tubulin. Surprisingly, this stops mitosis. Specifically, Taxol must affect A) chromatid assembly.
B) the fibers of the mitotic spindle.
C) anaphase.
D) the S phase of the cell cycle.
E) formation of the centrioles.
The correct answer is B) the fibers of the mitotic spindle.
Explanation:
The Taxol avoids the mitotic spindle to form, affecting directly the fibers of it. This, therefore, will stop the mitosis process, as the microtubules won't be forming properly.
Natural selection allows nature to chose which species survives. Only the fittest get to pass on their genes. And by fittest i mean the ones that are better adapted to the environment.<span />
