(a) he has explained all known side and after effects of such procedures to the pregnant woman concerned; (b) he has obtained in the prescribed form her written consent to undergo such procedures in the language which she understands; and (c) a copy of her written consent obtained under clause (b) is given to the pregnant woman. 2. No person including the person conducting pre-natal diagnostic procedures shall communicate to the pregnant woman concerned or her relatives or any other person the sex of the foetus by words, signs or in any other manner. 6. Determination of sex prohibited.- On and from the commencement of this Act,— (a) no Genetic Counselling Centre or Genetic Laboratory or Genetic Clinic shall conduct or cause to be conducted in its Centre, Laboratory or Clinic, pre-natal diagnostic techniques including ultrasonography, for the purpose of determining the sex of a foetus; (b) no person shall conduct or cause to be conducted any pre-natal diagnostic techniques including ultrasonography for the purpose of determining the sex of a foetus; (c) no person shall, by whatever means, cause or allow to be caused selection of sex before or after conception. CHAPTER IV CENTRAL SUPERVISORY BOARD 7. Constitution of Central Supervisory Board.1. The Central Government shall constitute a Board to be known as the Central Supervisory Board to exercise the powers and perform the functions conferred on the Board under this Act. 2. The Board shall consist of— (a) the Minister in charge of the Ministry or Department of Family Welfare, who shall be the Chairman, ex-officio; (b) the Secretary to the Government of India in charge of the Department of Family Welfare, who shall be the Vice-Chairman, ex-officio; (c) three members to be appointed by the Central Government to represent the Ministries of Central Government in charge of Women and Child Development, Department of Legal Affairs or Legislative Department in the Ministry of Law and Justice, and Indian System of Medicine and Homoeopathy, ex-officio; (d) the Director General of Health Services of the Central Government, ex-officio; (e) ten members to be appointed by the Central Government, two each from amongst— (i) eminent medical geneticists; (ii) eminent gynaecologist and obstetrician or expert of stri-roga or prasuti-tantra; (iii) eminent paediatricians; (iv) eminent social scientists; and (v) representatives of women welfare organisations;