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

Question

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

Quizplus · Accepted Answer

The prenatal diagnosis procedure that has recently come into wide use and can be performed earlier than amniocentesis involves sampling the chorion. This procedure is called chorionic villus sampling (CVS), which involves sampling the chorionic villi, tissue that forms the placenta, to diagnose genetic disorders or chromosomal abnormalities in the unborn baby. CVS can be performed as early as 10-12 weeks of gestation.

A Prenatal Diagnosis Procedure That Has Recently Come into Wide