One process by which physicians can obtain cell samples from fetuses in order to analyze their genes for possible genetic abnormalities (defects) is called ________.

A) ultrasound
B) positron emission tomography scanning
C) amniocentesis
D) immunotherapy

Amniocentesis

A medical procedure used in prenatal diagnosis where a small amount of amniotic fluid is sampled from the amniotic sac surrounding a developing fetus.

Ultrasound

A diagnostic imaging technique using high-frequency sound waves to create images of structures within the body.

Positron Emission Tomography Scanning

A diagnostic imaging technique that uses a radioactive substance to visualize and measure changes in metabolic processes and in other physiological activities.