Genetic mutation is what leads to the mechanism of natural selection, and thus c
ID: 197470 • Letter: G
Question
Genetic mutation is what leads to the mechanism of natural selection, and thus contributes directly to evolution, a necessary and useful process. The crossing over and randomization at fertilization also increases variation. Without the variation that results from mutations, natural selection would not occur, thus proving that genetic mutations are beneficial and crucial for life. However, cancer is a disease caused by mutation. Does this mean that cancer is inescapable for all humans if we simply live long enough?
Explanation / Answer
No, this does not mean that cancer is inescapable for humans. Mutations in oncogenes lead to the abnormal proliferation of cells resulting in cancer. Cancer not only depends on the genetic constitution of the individual, but it also depends on the environment and way of life the individual is leading such as too much smoking or drinking alcohol, can lead to cancer. It is not possible for any human to avoid mutations, as there is a chance of inescapable condition of cancer caused by genetic mutation but many people live long without this disease if they avoid such things like tobacco, exposure in UV rays. Yes, off course, genetic mutations in certain genes play a crucial role for the developing cancer. But these are the rare case if we compare this with the whole population. Every human goes through the mutation process and most of them are not affected by cancer.
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