During mitosis, a eukaryotic cell divides and forms two identical cells. Mitosis is a multi-step process, and the main goal is to ensure that each of the resulting daughter cells receives a copy of each chromosome.
Mitosis occurs in somatic cells, and the daughter cells formed at the end of the process must not be different from the parent cells. In prophase, the first phase of mitosis, the chromosomes come together, forming a dense structure. The mitotic spindle begins to form. During prometaphase, the nuclear membrane breaks down. The chromosomes are aligned in the center of the cell during metaphase.
During anaphase, the sister chromatids of the replicated chromosomes are pulled apart to opposite ends, becoming separate chromosomes. A nuclear membrane develops around each set of chromosomes during telophase. The cytoplasm begins to split between each nuclear membrane. At this point, cytokinesis, or the splitting of the cell into two, occurs, and mitosis is complete.
Mitosis is responsible for the body's growth and for the repair of injured cells. Mutations can develop as a result of mitosis because the chances of making a mistake during the process increases every time DNA is copied. It generally takes more than one error to create a cancerous cell, but the body has DNA repair systems that help fix most errors.Learn More
During mitosis, the four centrioles appear visibly and move to the ends of the nucleus, one pair at each end. They produce a series of threads that attach to the chromosomes. During cell division, the threads split the chromosomes and draw them into the centrioles.Full Answer >
A cell makes a copy of its DNA before mitosis occurs so there is a set of DNA for the daughter cell after mitosis has occurred. Because each cell needs its own set of DNA, there must be two sets of DNA present in a cell before it divides into two.Full Answer >
The nucleus of a cell only divides once during mitosis, which occurs only in eurkayotic cells. Mitosis is the process in the cell cycle that separates the duplicate chromosomes and nucleus of a dividing cell.Full Answer >
A cell plate is a cell divider and the beginning stage of a new cell wall, which develops during the last phase of mitosis known as telophase. Mitosis is the process of cell division whereby new cells replicate themselves and divide into two new cells. The appearance of a cell plate during telophase is one of the last steps in separating two cells from each other.Full Answer >