How does mitosis occur?
You already know a few things about this. To keep the genetic information intact during all the shuffling around of the DNA, we’re going to have to condense our DNA. We are also going to have to give the chromosomes more room for movement than just being stuck within the nucleus– so you are going to see that the nuclear envelope falls apart during mitosis. All the sorting of the DNA progresses through some steps, so each step is given a name– there are 4 phases (steps) of mitosis. Below you will find descriptions of each step. How does the cell physically split in two? Believe it or not, that is not mitosis. Keep in mind that both mitosis and meiosis are types of cell division. And in both cases, the cell physically splits– so the cell itself being cut up into two cells is called cytokinesis, and it is considered a separate phenomenon from mitosis or meiosis. It is the topic of another page for this lesson. The phases of mitosis Here’s a quick overview: The first thing that happens
