Which of the following statements is true concerning genetic screening?
A) Screening is illegal in over half of the world.
B) Screening can be done only in the first trimester of pregnancy.
C) Genetic screening is rarely done because it yields very little accurate information.
D) Screening can be done before conception by carrier recognition or during fetal testing.
Answer: D) Screening can be done before conception by carrier recognition or during fetal testing.