A prenatal diagnosis procedure that has recently come into wide use can be performed earlier than amniocentesis, and it involves sampling the
A) yolk sac material.
B) allantois.
C) chorion.
D) yolk sac.
E) umbilical cord.

Question

Quizplus · Accepted Answer

Chorionic villus sampling (CVS) is the prenatal diagnosis procedure that can be performed earlier than amniocentesis. It involves sampling the chorion, which is the outermost membrane that surrounds the embryo and forms the fetal part of the placenta. By sampling this tissue, doctors can analyze the genetic material of the developing fetus and detect any potential genetic disorders. The procedure is generally performed between 10-13 weeks of pregnancy.

A Prenatal Diagnosis Procedure That Has Recently Come into Wide