Correct Option (b)
Reason : Cells of amniotic fluid are cultured to increase their number and to obtain dividing cells. The chromosomes of the dividing cells can be examined for abnormalities. The cells and the fluid sample may also be tested for products of faulty genes (e.g. high level of α-fetiprotein, i.e. AFP) indicated high risk of birth defects.
Correct Option (b) Reason : Cells of amniotic fluid are cultured to increase their number and to obtain dividing cells. The chromosomes of the dividing cells can be examined for abnormalities. The cells and the fluid sample may also be tested for products of faulty genes (e.g. high level of α-fetiprotein, i.e. AFP) indicated high risk of birth defects.