Question

Which among the following options is correct regarding amniocentesis?

• A. It is a prenatal test in which a sample of tissue is taken from the placenta
• B. A prenatal foetal sex determination test based on the pattern of chromosomes of cells in chorionic fluid
• C. A prenatal test based on the pattern of chromosomes of the foetal cells present in amniotic fluid
• D. An examination of tissues from the umbilical cord containing foetal cells

Answer 1

The correct option is C A prenatal test based on the pattern of chromosomes of the foetal cells present in amniotic fluid

Amniocentesis is a prenatal test which is used to detect genetic disorders in the foetus. It is also used for foetal sex determination. During amniocentesis, a little amount of amniotic fluid which surrounds the foetus in the womb is collected. This fluid consists of foetal cells and dissolved substances. The foetal cells are analysed and the chromosomal pattern of the foetal cells reveals if the foetus has got any genetic disorders. A sample of tissue is taken from placenta in CVS (Chorionic Villus Sampling). It is also a prenatal test to detect genetic disorders.