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Glossary

  • Gene: A smaller piece of genetic information. Genes are found on the chromosomes. There are about 25,000 genes in a human.
  • Genetic testing: Genetic testing involves looking at specific parts of the genetic code to see if there is a change from what is expected. If a person has positive genetic testing, a change has been found that is causing the disorder in question. If a person has negative genetic testing, that person does not have a change in the gene tested. It does not necessarily mean that the person does not have the disorder in question.