shorten and thicken. The nuclear membrane breaks down and the nucleoli is no longer visible. Along with this, the spindle appears in the cytoplasm which is made up of microtubules that pull the chromosomes toward the poles. In metaphase, the chromosomes have moved to the center of the metaphase plate and the centromere attaches to the spindle. In anaphase, the centromere regions of each pair of chromatids separate and are moved by the spindle fibers toward opposite poles. Telophase, the last stage of division, is where the chromosomes uncondensed which is followed by the formation of a new nuclear and a cleavage furrow. These phases will be observed in the onion root tips and the whitefish blastula that is used in this lab. Materials and Methods: *Please refer to the carbon copies located towards the end of this report* Results:
Interphase Prophase Metaphase Anaphase Telophase Table 3.1 Number of Cells Percent of total cells counted Time in each stage Field 1 Field 2 Total Interphase 39 45 84 41.58% 10 hours Prophase 32 39 71 35.15% 8.4 hours Metaphase 4 9 13 6.43% 1.5 hours Anaphase 10 8 18 8.91% 2.1 hours Telophase 6 10 16 7.92% 2 hours 202 3A.1 Questions 1.) Explain how mitosis leads to two daughter cells, each of which is diploid and genetically identical to the original cell. What activities are going on in the cell during interphase?