law: Pre-Natal Diagnostic Techniques (Regulation and Prevention of Misuse) Act, 1994
  8. Term of office of members
  (1) The term of office of a member, other than
  
  an ex officio member, shall be,-
  (a) in case of
  
  appointment under clause (e) or clause (f) of sub-section (2) of section 7,
  
  three years; and
  (b) in case of
  
  appointment under clause (g) of the said sub-section, one year.
  (2) If a casual vacancy occurs in the office
  
  of any other members, whether by reason of his death, resignation or inability
  
  to discharge his functions owing to illness or other incapacity, such vacancy
  
  shall be filled by the Central Government by making a fresh appointment and the
  
  member so appointed shall hold office for the remainder of the term of office
  
  of the person in whose place he is so appointed.
  (3) The Vice-Chairman shall perform such
  
  functions as may be assigned to him by the Chairman from time to time.
  (4) The procedure to be followed by the
  
  members in the discharge of their functions shall be such as may be prescribed.