Cell Division

I believe that our observations ar repressentative of jail cell part taking place in the oinon root tip. Firstly, this is beca enforce our numbers of the number of cells in apiece phase of mitosis are similar to the rest of the groups, so we bunghole tackle our results are most likely correct. We can also assume our calculations are right because we know that Interphase is the most active phase in the physical process of cell divison, which would agree with our calculations since we assume that approxiamtly 93% of cells are issue though Interphase.The phases of mitosis are much shorter then that of Interphase, and the cell spends less time in these phases. This agrees with our calculations because they run around 2-10%, conculding the fact that it is right to infere that a sm entirelyer amount of cells would be in the phases of mitosis. 5. Plants use a similar process with a few differences than in the pitying process. A plant cell creates a mitotic spindle and has a cen trosome, but it does not have a centrioles, as in human chromosomes. The other major difference in plants is the way in which cytokinesis occurs.In human cells, the plasma membrane invaginates along the equator of the cell, creating a cleavage furrow that entrust separate the cytoplasm in devil fille cells. Plant cells have rigid cell walls that proceed this. Instead, they use 2 different approaches for cytokinesis. The plasma membrane and cell wall start inward together, eventually separating the heighten cell into two. Then the cell wall(which human cells do not contain) forget separate the two daughter cells, and the cell wall starts growing in the middle of the cell between the two nuclei. This is know as the cell plate.It continues growing until its edges r individually the cells outer surface, separating the parent cell into two daughter cells. 6. Not all cells in the meristematic component part of the onion appear to have a nucleus. This is because The earliest cells , and all prokaryote cells, dont have a nucleus. Inside these simple cells, the DNA molecules just tout around in the cytoplasm. When the cells have devoloped, most likely during telophase,the nucleus will appear. 7. The result of if the chromosomes of the two daughter cells remained on one side of the cell plate could be non-disjunction, where a chromosome may fail to separate during anaphase.One daughter cell will receive both sister chromosomes and the other will receive none. This results in the former cell having three chromosomes containing the same genes (two sisters and a homologue), and will develop into a condition called trisomy, and the latter cell which would and have one chromosome (the homologous chromosome), would be a condition known as monosomy. These cells are considered aneuploid, a condition often associated with cancer. 8. A severalise result is better in the measure of the time for each miotic phase because we can compare each number of time that each group gets.If the numbers are similar we can infere that it is more presumptive to be the right answer, and can exclude any numbers that are an abnormal greater difference then the rest. By comparing all the calculations and observations of the class, we can justify the observations that are similar to those of the rest of the class. 9. Biocide 2-4D would harm and prevent the action of the substances within the meristematic cells of the plants. It will also cause major issues in sex cells because the chromosomes during metaphase 1 will not exchange proper genes with each other.