A Parent Tells the Nurse That Her Brother Has Tourette

A parent tells the nurse that her brother has Tourette syndrome and she is concerned that her five-year-old son may be at risk for the same disorder. Which is the most appropriate reply?

A) There is no known genetic association in Tourette syndrome.
B) There may be a genetic predisposition for developing Tourette syndrome.
C) A person whose uncle has Tourette syndrome will definitely develop the condition.
D) We do not have any information on the hereditary factors associated with Tourette syndrome.