genetherapy[1] - Gene Therapy Gene therapy is one the most...

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Gene Therapy Gene therapy is one the most rapidly growing techniques in the medical field today. One out of ten people are affected by genetic disorders. Genetic disorders were almost impossible to cure before today’s technology for a number of reasons. Genetic disorders are caused by alterations in our DNA. These alterations are caused by copying errors by our own DNA. If DNA is not properly replicated, it can usually be corrected by our body. Our body has its own error-correction mechanism, however if the error is not corrected it can result in gene mutations. Statistics show that every person has an average of about one hundred mutations. Do not be alarmed by this, because most of these mutations occur in junk DNA. Junk DNA has no effect on the life functions of an individual so they’re not affected by these mutations. However, one in four people have a gene mutation connected with protein- coding DNA. If there is a defect in a person’s protein-coding DNA, physiological effects can occur (Gene Therapy Solutions). There are over four thousand genetic disorders that have been discovered. These disorders can be broken down into four different types. Single-gene disorders, surprisingly enough, are caused by a defect in a single gene. An example of a single- gene disorder is sickle cell anemia. Multifactorial disorders are the opposite of single gene disorders. They are caused by a number of genes. An example of this would be Alzheimer’s disease. Chromosomal disorders are caused by alterations of entire chromosomes. Down syndrome is caused by an extra copy of a chromosome. Mitochondrial diseases are caused by a defect in the cell’s mitochondria and can affect a person’s metabolism (Gene Therapy Solutions)
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Most people believe that if one person has a genetic disorder, it would only be present in that person’s genes. Unfortunately, this is not true. Genetic disorders are hereditary. Children can get a genetic disorder from one or both parents. There are two types of genes in the human body that determines our traits. These are dominant and recessive genes. If a genetic disorder is on a dominant gene, a child will only need one dominant gene to develop a genetic disorder. If the gene is recessive, a child would need two of the recessive genes from each parent in order to develop a genetic disorder
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This document was uploaded on 10/08/2008.

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genetherapy[1] - Gene Therapy Gene therapy is one the most...

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