Lab Report On Allium Cepa

Results:
In Allium cepa, the cell walls surrounding the cells were generally a rectangular shape and somewhat in columns. The cell walls were very distinct because they were dark purple. Most of the cells were in interphase. Here, the nucleus could clearly be seen, taking up about one third of the space inside the cell. Most cells in interphase had one nucleolus inside the nucleus, but some had multiple. The nuclei were pink because of the stain and the nucleoli were a much darker pink. The cytoplasm surrounding the nuclei was light brown and kind of purple. A cell in prophase/prometaphase had a nucleus that just looked like a ball of yarn, long strands of chromatin, that made the nucleus appear speckled with light and dark pink and purple. Cells in metaphase were easy to identify because in the place of the nucleus was what looked like a dark purple explosion or a little spider made of sister chromatids. There were very few cells in anaphase, but ones that we found looked like there were two blobs of dark purple on either side of the cell connected by many thin strands, spindle fibers. Telophase looked like two identical cells that were in interphase, but we could tell they were in telophase because sometimes the line that separated them (the beginning of cytokinesis in plants, the growth of the cell
This stage was undoubtedly the longest stage of the cell cycle. 13.5% of the cells were in prophase/prometaphase, spending a total of 194.4 minutes of one day in this phase. Then, 6% of the cells we counted were in metaphase, which is about 85 minutes of one day. Only 1.7% of the cells were in anaphase which lasts about 24.48 minutes of one day. Lastly, 4.8% of the cells were in telophase which we determined lasts 69.12 minutes. (Figure