Original sentence: Sex-selective abortion is when a fetus is aborted after a determination is made (usually by ultrasound but also rarely by amniocentesis or another procedure) that the fetus is of an undesired sex
Edited sentence: Sex-selective abortion is a form of prenatal discrimination against in which a fetus is  aborted after a determination (usually by ultrasound but also rarely by amniocentesis or another procedure) that the fetus is of an undesired sex