The most clinically useful technique for prenatal diagnosis of chromosomal abnormalities at 3 months' gestation is:

Question

Quizplus · Accepted Answer

Chorionic villus sampling consists of extracting a small amount of villous tissue directly from the chorion. This procedure can be performed at 10 weeks' gestation and does not require in vitro culturing of cells because sufficient numbers are directly available in the extracted tissue. Thus the procedure allows prenatal diagnosis at about 3 months' gestation rather than at nearly 5 months' gestation.

The Most Clinically Useful Technique for Prenatal Diagnosis of Chromosomal