Question

Identify the incorrect statement(s).

I. Amniotic fluid test is used for diagnosing chromosomal abnormalities.

II. In ultrasound imaging, visible images are produced by the pattern of echos made by organs.

III. Chronic villi sampling is an invasive technique used in prenatal diagnosis.

IV. Maternal blood sampling is an invasive technique where mother’s blood is tested.

Choose the correct option.

(a) Only I

(b) Only IV

(c) Only II

(d) III and IV

Answer 1

Answer is : (b) Only IV

Maternal blood sampling is a non-invasive technique to detect foetal disorders.

The test measures the level of three or four substances, e.g. alfa fetoprotein, hCG, etc., in a sample of mother’s blood during pregnancy. These tests are done to detect birth defects in the foetus such as Down’s syndrome, brain or spinal defects, etc.