Cellular Reproduction :: science

Cellular ReproductionCellular Reproduction is the process by which either living things produce new existences similar or identical to themselves. This has to slip by because if a species were not able to reproduce, that species would quickly become extinct. Reproduction consists of a basic pattern the conversion by a parent organism of raw materials into offspring or cells that will later develop into offspring. The productive process, whether vegetative or sexual always involves an exchange in transmissible material from the parents so that the new organism may also be able to reproduce. Reproductive processes can be categorized into either sexless reproduction or sexual reproduction. Asexual reproduction is any stock of reproduction that does not require the union of male and female reproductive material (sperm or egg). Most single celled organisms reproduce by the asexual process known as fission, which is commonly called mitosis. Fission is The splitting of a nucleus i nto both roughly equal parts accompanied by the release of a pretty large amount of energy. Inter bod, the first phase of the cell cycle and also the phase before mitosis, starts as briefly as the cell is born. Interphase is broken up into three phases, G1, S, and G2. During the G1 phase, the cell increases in fate except for the chromosomes, which stay the same. Protein synthesis is also occurring during this phase. If a cell doesnt divide further, it remains in the G1 phase. Next is the S phase, in which the plentifulness of the cell continues to increase, and DNA is duplicated, and then the chromosomes divide. During the G2 phase of Interphase, the cell becomes double its mass at birth, the chromosomes begin to shorten and coil, and the centrioles appear, the cell is now ready to assent into mitosis. In the first phase of mitosis, prophase, the chromosomes become visible and the centrioles split in half and then move to opposite sides of the cell. At this point chromosomes set out formed into two chromatids separated by a structure called a centromere. Spindle fibers are barely visible. During metaphase, the second phase of mitosis, the two chromatids line of descent up along the equator of the cell. Each chromatid has its own spindle fiber. Next comes the terzetto phase of mitosis, Anaphase, in which the centromeres break in half, causing each of the two chromatids to start to be pulled to different sides of the cell.