Tehra's obstetrician is using a medical procedure that employs high-frequency sound waves to detect the outline of the fetus and to observe its movements.This is called

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An ultrasound uses high-frequency sound waves to create an image of the fetus and observe its movements. Amniocentesis and chorionic villus sampling are procedures used to diagnose genetic disorders, while karyotyping is a laboratory technique used to study chromosomes.

Tehra's Obstetrician Is Using a Medical Procedure That Employs High-Frequency