Read the following statements carefully: (i) 'Saheli' is a non-steroidal, once-a-week pill developed by scientists at CDRI, Lucknow. (ii) Amniocentesis involves the analysis of the chromosomal pattern of cells in the amniotic fluid. (iii) Amniocentesis is widely used to detect structural developmental defects such as cleft palate. (iv) The statutory ban on amniocentesis was implemented primarily to check the maternal

Step-by-step solution

Statement (i) is correct. 'Saheli' is a once-a-week oral contraceptive for females containing a non-steroidal preparation, developed by the Central Drug Research Institute (CDRI) in Lucknow. Statement (ii) is correct. Amniocentesis is based on the chromosomal pattern in the amniotic fluid surrounding the developing embryo. Statement (iii) is incorrect. Amniocentesis is used to detect genetic disorders (such as Down syndrome, haemophilia, and sickle-cell anemia) by analysing foetal cells, not structural defects like