Gene therapy :: essays research papers fc

Genetic disorders have been plaguing people for ages and causing fatalities. However, with new information and research, and something called gene therapy, hope now exists for these unfortunate individuals. Gene therapy is a technique for correcting defective genes responsible for disease development. It has been around for a while now and is getting more advanced with time. Experimentation is an ongoing process with gene therapy. Ethical issues are something that has been accompanying the procedure since it has been used. New facts on gene therapy continue to be uncovered as we speak.   Ã‚  Ã‚  Ã‚  Ã‚  To start off, an overview of why people need gene therapy should be covered. Each of us carries about half a dozen defective genes. However, we remain ignorant to this fact unless we are among the millions of people who have a genetic disorder. About one in ten people has, or will develop some time later in life, an inherited genetic abnormality. And approximately two thousand eight hundred specific conditions are known to be caused by defects in just one of the patient’s genes. Some single gene disorders are pretty common, such as cystic fibrosis.   Ã‚  Ã‚  Ã‚  Ã‚  Most people do not suffer harmful effects from our defective genes because we carry two copies of nearly all genes. One is inherited from our mother and the other from our father. The only exceptions to this rule are the genes found on the male sex chromosomes. â€Å"Males have one X and one Y chromosome, the former from the mother and the latter from the father. So each cell has only one copy of the genes on these chromosomes. In the majority of cases, one normal gene is enough to avoid all the symptoms of disease. If the gene that may be harmful is recessive, then its normal counterpart will carry out all the tasks assigned to both. A disease will develop only if someone inherits two copies of the recessive gene from their parents.† (Web source #3) In other terms, if the gene is dominant, it alone can produce the disease, even if the counterpart is normal. Finally, there are the X chromosome-linked genetic diseases. Because males have only one copy of the genes from this chromosome, there are no others available to fulfill the defective gene’s function. Hemophilia is a common result of this.   Ã‚  Ã‚  Ã‚  Ã‚  To continue, how gene therapy works, should be explained. There are several different approaches scientists may use to correct faulty genes with therapy.