Genetic testing in the classroom

Abstract
EDITOR,--Audrey Tyler and her colleagues are concerned that students' practical work could lead to genetic screening without pretest counselling.1 We have run such practicals for four years (for science students) and for two years (for medical students). Students are given the option of testing whether they are carriers of the defect causing cystic fibrosis (in terms of the δF-508 mutation) after an explanatory …