Homework _16 with answers

Homework _16 with answers - Homework#16,02/20/09(Dr.MMG) 1....

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Homework #16, 02/20/09 (Dr. MM-G) 1. A cell containing 92 chromatids at metaphase of mitosis would, at its completion, produce two nuclei containing how many chromosomes? A. 92 B. 16 C. 23 D. 46 E. 12 (Ans D) 2. It is possible to label the microtubules of the spindle with fluorescent molecules so that they become visible under a special microscope that allows fluorescent molecules to be seen. You want to determine how the chromosomes move to the poles. To do that you used a laser microbeam and photobleached an area across the labeled spindle on one side. Then you watched under the microscope to see the behavior of the chromosomes and of the spindle during anaphase. You observed that the bleached area does not move while the chromosomes move to the pole. What would you conclude regarding the manner this cell moves chromosomes to the poles? A. That microtubules move the chromosomes by disassembling at the spindle poles. B.
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Homework _16 with answers - Homework#16,02/20/09(Dr.MMG) 1....

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