noun. 1  Linguistics A predictable phonetic variant of a phoneme. 2  For example, the aspirated t of top, the unaspirated t of stop, and the tt (pronounced as a flap) of batter are allophones of the English phoneme &sol;t&sol;. 3  or Allophone Canadian A person whose native language is other than French or English.
What is genetic testing? Genetic testing is a type of medical test that identifies changes in chromosomes, genes, or proteins. The results of a genetic test can confirm or rule out a suspected genetic condition or help determine a personâs chance of developing or passing on a genetic disorder. More than 1,000 genetic tests are currently in use, and more are being developed. Several methods can be used for genetic testing: Molecular genetic tests (or gene tests) study single genes or short lengths of DNA to identify variations or mutations that lead to a genetic disorder.
genetic testing to learn about your cancer risk is done only if you decide to have it if you are concerned about your family s pattern of disease cancer you ve had in the past or other cancer risk factors you may want to talk to your doctor about whether to have genetic testingfor diseases that can be inherited genetic testing can be used in different situations the type of testing most often used to check for cancer risk is called predictive gene testing it s used to look for gene mutations that might put a person at risk of getting a diseaseenetic testing is the process of using medical tests to look for changes mutations in a person s genes or chromosomes hundreds of different genetic tests are used today and more are being developed genetic testing for diseases that can be inherited genetic testing can be used in different situations