|
|
Genetic testing allows the genetic diagnosis of vulnerabilities to inherit diseases,
and can also be used to determine a person's ancestry. Normally, every person carries
two copies of every gene, one inherited from their mother, one inherited from their
father. The human genome is believed to contain around 20,000 - 25,000 genes. In
addition to studying chromosomes to the level of individual genes, genetic testing
in a broader sense includes biochemical tests for the possible presence of genetic
diseases, or mutant forms of genes associated with increased risk of developing
genetic disorders. Genetic testing identifies changes in chromosomes, genes, or
proteins.
Most of the time, testing is used to find changes that are associated with inherited
disorders. The results of a genetic test can confirm or rule out a suspected genetic
condition or help determine a person's chance of developing or passing on a genetic
disorder. Several hundred genetic tests are currently in use, and more are being
developed.
Since genetic testing may open up ethical or psychological problems, genetic testing
is often accompanied by genetic counseling.
more ...
|
|