Is the replication process of cell is continuous till the end of life?

Question

DNA replication takes place in cell.Is it like each cell replicates continuously till the end of life?If it is so,then where these all DNA elements live?

Answer 1

Does replication continue till the end of life? What exactly do you mean? Does replication continue forever? If that's the case, the answer would be no. As a previous response said, short sequences located at the end of chromosomes shorten after each replication. The use of the telomerase is to prevent DNA from getting shorter after each replication, due to the inability of the replicating enzyme, the polymerase, to replicate the tips of a DNA strand. Telomerase solves this by filling in the unreplicated ends with parts of itself. As a result, the telomerase gets shorter and shorter after each replication. When the telomerase runs out, the DNA will begin to erod due to the fact that the tips of the strand are lost during ecah reolicationl. Eventually, the DNA will be lost and replication will cease to occur.



However, if your question was if cells kept replicating until death, then the answer is yes. This is because the fact that cells cannot replicate for eternity is one of the main reasons that we eventually die. In general, cell replication is what keeps us alive.



Then again, the rate of replication is also very important. Unlike most normal cells that are able to slow down the rates of replication when replication is not needed, cancer cells will keep replicating no matter what. Also, it is proven that some cancer cells have a mutation that allows the cells to produce telomeres, allowing the cells to replicate for eternity.



Lastly, the postition of DNA within the cells is in the nucleus, which is analogous to the core of a planet. The DNA is usually intricately packaged to form what people know as chromosomes.

Answer 2

that's a consequence of countless techniques. organic determination may be broken into aspects. Replication -- this standard technique of existence is significant; because of the fact replication isn't letter suitable, it has a secondary results of producing changes in the inhabitants. Mutation -- in spite of if that's an blunders throughout replication or the consequence of a mutagen, that's a source of heritable version in populations Differential survival -- alongside with replication, this consists of organic determination environment exchange -- intake of components, production of waste and uneven flux of fabric and skill into the device (be it the biosphere or a community environment) means that the characteristics favoring survival continuously exchange. The creation of an organism that reward from a earlier risky skill or cloth is between the biggest interest changers. because of the fact the techniques are dynamic and ceaseless, there is not any end consequence, shop extinction. the present isn't the tip.

Answer 3

No, cells can stop their replication whenever they want, with the exception of cancerous cells. Muscle cells cease replicating in infancy. Stomach lining cells replicate endlessly as a class, but individual cells may opt to cease replication, and may or may not opt to die, in a process called apoptosis.

Answer 4

No. If you are talking about multicellular organisms, then no. Not all cells continue to do this. Some are skin cells that must be replenish all of the time. Other are examples are liver cells that do this on a very limited basis. Depending on how much replenishing has to be done.

Answer 5

In multicellular organisms a portion of the chromosome called the telomere is shortened with each cell division. Once all of the telomere is gone, the cell stops dividing. Once all of the cells have stopped dividing, the organism dies.