Bachelor of Science with honors, University Singapore, 1969. Doctor of Philosophy, University Singapore, 1974. Doctor of Science (honorary), Loughborough University, 2003.
Lecturer University Singapore, 1974-1981. Senior lecturer National University of Singapore, 1982-1986. Director Singapore Science Center, 1982-1991.
Associate professor Nanyang Technology University, Singapore, 1991, professor biology, since 1992. Dean School of Science National Institute Education, 1991-2000, director, since 1994. Chairman National Youth Achievement Award council, since 1995.
Chairman Alexandra Hospital Medifund Committee, Singapore, 1993-2004. Member Citizens Consulatative Committee, Clementi Constituency, Singapore, since 1981. Chairman National Parks Board, since 1998.
Member Science & Engineering Research Council Board, 2001-2003. Fellow Singapore Institute Biology (honorary). Member Federation Asian Science Academies and Societies (treasurer 1994-1998, president 1999-2002, past president since 2003), Singapore National Academy of Sciences (president since 1992), Singapore Institute Biology (president 1991-1994), Rotary International (Jurong Town Club, president 1987-1988).
Married Community College Wong, November 14, 1976. Children: Lionel Josip Juraj, Lester T.J.