168.New sections 1(6) and 4A(11) of the 1990 Act confer powers to amend the definitions of “embryo”, “gametes” and “human admixed embryo” in the 1990 Act by regulations. Section 31 inserts new section 45A into the 1990 Act to enable consequential changes to other legislation as a result of amending any of these definitions. The power enables amendments to be made to Acts of Parliament, Acts of the Scottish Parliament, Measures or Acts of the Welsh Assembly and Northern Ireland legislation and any secondary legislation made under them (after consultation with the devolved administrations where appropriate). The power under section 45A is exercisable by order.