The French composer Lully (1632-1687) used to beat time by banging a big stick (like a walking stick) on the floor to the time of the music. One day he banged his stick very hard and it went through his foot and he became ill and died. Conducting as we know it had become normal by the 19th century. The composer Mendelssohn (1809-1847) was a very good conductor. Some conductors in Victorian times were very conceited and behaved like showmen. The conductor Louis Antoine Jullien (1812-1860) was a French conductor who often came to England
Definition. 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 disease. Although genetic testing can provide important information for diagnosing, treating and preventing illness, there are limitations.
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.