| Chief, Laboratory of Genetics, National Institute on Aging, NIH | 1997-Present |
| Director, Center for Genetics in Medicine, Wash. Univ. Sch. of Med. | 1987-1997 |
| Professor of Genetics, Wash. Univ. Sch. of Med. | 1987-1997 |
| Director, RIKEN - Washington University Exchange Program, St. Louis | 1987-1993 |
| Professor of Microbiology in Medicine, Wash. Univ. Sch. of Med. | 1980-1997 |
| Professor, Dept. of Molecular Microbiology, Wash. Univ. Sch. of Med. | 1972-1997 |
| Adjunct Professor of Genetics and Molecular Microbiology, ibid. | 1997-Present |
Visiting Scientist and Macy Fellow, International Institute of
Genetics and Biophysics, Naples, Italy | 1980-1981 |
Associate Professor, Washington University School of Medicine
Department of Molecular Microbiology, St. Louis, Missouri | 1968-1972 |
Assistant Professor, Washington University School of Medicine
Department of Molecular Microbiology, St. Louis, Missouri | 1963-1968 |
Instructor, Washington University School of Medicine
Department of Molecular Microbiology, St. Louis, Missouri | 1962-1963 |
Postdoctoral Fellow, National Science Foundation, Pasteur
Institite, Paris, France | 1960-1962 |
Predoctoral Fellow, National Science Foundation, Harvard
University, Cambridge, Massachusetts | 1957-1960 |
| Chairman, International Advisory Committee, GDB | 1995-1999 |
| President/Past President, American Society for Microbiology | July 94-June 96 |
| M.D., Honoris Causa, University of Uppsala | 1994 |
| Council for Research and Clinical Investigation, American Cancer Society | 1993-Present |
| National Board of Medical Examiners, Microbiology | 1990-1992 |
| Chairman, American Cancer Society Grant Review Panel | 1989-1991 |
| Josiah Macy Foundation Fellow | 1980-1981 |
| Member - NIH Graduate Fellowship Panel | 1979-1983 |
| Editorial Board, Microbiological Reviews | 1975-1988 |
| President's Biomedical Panel, Microbiology-Immunology-Virology Cluster | 1975 |
| Eli Lilly Award | 1969 |
| RCDA Award | 1967-1972 |
| Member, Museum of Boston Aging Exhibit Advisory Council | 1998- |
| Council Member, The Human Genome Organization (HUGO) | 1997- |
| Editor, Genomics | 1996- |
| Editor, GENE | 1996- |
| Member, Cancer Center | 1996- |
| Organizer, X Chromosome Workshop | 1993 |
| Organizer, EMBO YAC Courses and Japan YAC Course | 1990-1993 |
Co-organizer for the J.D. Watson Celebration at Cold Spring Harbor,
and the Jubilee Symposium, IIGB, Naples | 1988 |
Member, Human Genome Initiative: Reston Ad Hoc Advisory Group:
Information Handling Workshop | 1988 |
| Member, Special Study Section, NIH Complex Genomes, Site Visits for NIH | 1988 |
| Member, American Cancer Society Personnel Committee | 1986-1991 |
| Divisional Group Councilor, Amer. Soc. Microbiol. | 1986-1988 |
| Chairman, Molecular Biology Division, Amer. Soc. Microbiol. | 1984-1985 |
American Editor of "Aspects of Microbiology", a series published by
the American Society for Microbiology and Van Nostrand Publishers | 1982-1990 |
| American Cancer Society Grant Review Panel, Chairman | 1980-1981 |
| Editorial Board, Microbiological Reviews | 1975-1987 |
| American Cancer Society Grant Review Panel | 1975-1982 |
| Editor-in-chief, "Microbiology", ASM Annual Volumes | 1974-1986 |
| Editor, Genetics | 1969-1983 |
| Editor, J. Bacteriology | 1969-1976 |
| Society Memberships: |
| American Association for the Advancement of Science (AAAS) |
| American Society for Biochemistry and Molecular Biology (ASBMB) |
| American Society for Cell Biology (ASCB) |
| American Society for Microbiology (ASM) |
| Genetics Society of America (GSA) |
| European Society of Human Genetics (ESHG) |
| Sigma Xi |
| Research Interests: |
| Analysis of the human X chromosome using yeast artificial chromosomes |
| Structure of nucleoli |
| Pathophysiology of X-linked diseases in human development and aging |
