Colchicine is a toxin that binds to tubulin proteins and prevents microtubules from elongating. What effect might this have on dividing cells?
A. Replicated chromosomes will not be able to stick together, so sister chromatids will not properly sort into daughter nuclei.
B. Cells will be able to complete mitosis, but cytokinesis will not occur.
C. Chromosomes will not be able to condense, so mitosis will not occur.
D. Sister chromatids will not be properly separated into separate daughter cells.
E. The cell will not be able to move past the restriction point, so DNA will not be replicated.
Answer: D
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