This section contains 507 words (approx. 2 pages at 300 words per page) |
How Cancer Is Developed
Cancer is a horrible disease to which no cure has been found and it continues to consume the lives of millions.
Cancer comes from genetic changes in the cell cycle such as a mutation of a somatic cell. Cancer can also be caused from environmental factors like chemical carcinogens, or physical mutagens like x-rays, or viruses.
The underlying problem is due to oncogenes. An oncogene is a gene found in viruses or as a part of the normal genome that triggers cancer. However, at first a gene is a proto-oncogene, which is a normal gene until influenced by an oncogene, which can happen in three ways. The first way a proto-oncogene can become an oncogene is if a proto-oncogene happens to be adjacent to an active promoter, which increases gene transcription. An active promoter may also cause an increase in gene expression once the gene or promoter...
This section contains 507 words (approx. 2 pages at 300 words per page) |