What is the cycle of human cells?
Human cell cycle consists of two main phases: interifase and mitotic phase. In most cells it includes mitotic phase of mitosis, but reproductive cells are also subject to meiosis. The intermediate part of the cycle of human cells is when the cells are involved in their normal cellular function and prepare for division. Mitosis is a place where cells are divided and produced by two separate but identical daughter cells. In meiosis, the product is four daughter sex cells or gametes, with half of the chromosomes like its parent cells.
Most cells undergo mitosis as the final part of the cycle of human cells. As the cells grow during the interifase, they can be too large to be effective in waste disposal and nutrient absorption. This and other signals, such as hormones, can say a cell when it is ready for division. Before it is divided, the cell replicates its DNA so that every daughter cell receives a copy. Once the mitosis is completed, the result is two daughter cells with the same DNA.
there are manyIt controls and stops which regulates the division and growth of cells. In several points along the cycle of human cells, the cell will have to meet certain criteria before it can move to another phase. In addition, cells often cease to divide as soon as other cells touch. Cancer cells are an exception to the rule. These cells no longer have the ability to stop divided and can therefore produce dangerous tumors.
To form reproductive cells - ie sperm or eggs - the cell must undergo meiosis as part of a cycle of human cells. Meiosis is a process in which the cell is divided into four cells, each of which has half of the chromosomes as a parent cell. During meiosis, cells are divided twice. In front of the first division, chromosomes are copied and undergo two unique processes called Synapés and Crossing. These processes provide four resulting daughter cells with a larger genetic variety of the second meiotic division.
interphasePart of the human cell cycle is the phase in which the cell performs most of its cellular activity. There are three main parts of the interifase - G 1 , S and G 2 . "S" concerns "synthesis" and is part of the cell cycle where DNA is replicated for mitosis. The two phases "G" apply to the time before the start of the S and the time between the end S and the beginning of mitosis. Although the cell can prepare for cell division during the G and S phase, it is constantly performing its cellular service throughout the interifase.
As soon as it is created, the cell enters G 1 . The amount of time that the cell spends at this stage depends on the type of cell like it is. In some cells it may take a day and other years. The cell in the phase of G 2 goes through the final preparations for cell division. Another phase, G 0 refers to a cell that will temporarily or hardly divide.