In class today, Mrs. Dress will be discussing the phases of cell division, she will start by explaining interphase.
Hello students, the first phase of cell division is Gap 1, where the cell goes through it's normal functions.
Gap 1 Phase (G1)
Next is Synthesis, or the S phase, where the chromosomes are duplicated by the cell, creating sister chromatids.
After the Synthesis phase occurs, the cell goes through the Gap 2 phase, where the cell checks over the duplications for any errors created.
Synthesis (S Phase)
Gap 2 Phase (G2)
After Prophase, comes Metaphase. This is when the chromosomes align themselves in the middle of the cell and are met by spindle fibers created by the centrosomes.
Next we are on to Mitosis, and this is broken into 4 phases, the first two are Prophase and Metaphase. In Prophase, the chromosomes become visible and the nucleolus disappears.
The next phase of mitosis being showed here is anaphase. Here, the chromosomes pulled apart are then pulled by the spindle fibers to opposite poles of the cell
The final phase of Mitosis is Telophase. It is the process that separates the duplicated DNA carried in the nucleus of the original cell into two identical cells. This material is pulled to the opposite poles of the cell.
Finally, we have Cytokinesis, the last phase in the cell division process. In this phase, cytoplasm of the original cell is divided into two duplicate cells.
Just like that, we are back to the beginning of the whole cycle, thanks for your attention. Class dismissed!