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Transcript
1 Created by Boundless The drug colchicine inhibits the formation of spindle fibers. If you treat dividing cells with colchicine, what would you expect the result to be? A The sister chromatids would all segregate to the same daughter cell. B The chromosomes would segregate randomly into each daughter cell. C The chromosomes would line up along the metaphase plate but not separate. D The cells would be unable to divide and eventually die. 2 Created by Boundless The mitotic spindles arise from which cell structure? A cleavage furrow B centromere C kinetochore D centrosome 3 Created by Boundless What do you predict would happen if only one microtubule attatched to a pair of sister chromatids during mitosis? A The sister chromatids would become tangled and break during separation. B The sister chromatids would fail to separate and be pulled to the same pole. C Cellular division would be arrested. D The sister chromatids would separate normally. 4 Created by Boundless Attachment of the mitotic spindle fibers to the kinetochores is a characteristic of which stage of mitosis? A metaphase B prometaphase C prophase D anaphase 5 Created by Boundless Which of the following events occurs during the prophase stage of mitosis? A Identical chromosomes align themselves along the equator of the cell. B The cell grows in size. C The nuclear membrane disappears D The cell membrane pinches off and splits into two daughter cells.