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 involves examining your dna the chemical database that carries instructions for your body s functions genetic testing can reveal changes or alterations in your genes that may cause illness or diseasealthough genetic testing can provide important information for diagnosing treating and preventing illness there are limitationsfor example if you re a healthy person a positive result from genetic testing doesn t always mean you will develop a diseaselthough genetic testing can provide important information for diagnosing treating and preventing illness there are limitations for example if you re a healthy person a positive result from genetic testing doesn t always mean you will develop a disease