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Barbara McClintock Autobiography
In the fall of 1921 I attended the only course in genetics open to
undergraduate students at Cornell
University. It was conducted by C. B. Hutchison, then a professor
in the Department of Plant Breeding, College of Agriculture, who soon
left Cornell to become Chancellor of the University
of California at Davis, California. Relatively few students took
this course and most of them were interested in pursuing agriculture
as a profession. Genetics as a discipline had not yet received general
acceptance. Only twenty-one years had passed since the rediscovery
of Mendel's
principles of heredity. Genetic experiments, guided by these principles,
expanded rapidly in the years between 1900 and 1921. The results of
these studies provided a solid conceptual framework into which subsequent
results could be fitted. Nevertheless, there was reluctance on the
part of some professional biologists to accept the revolutionary concepts
that were surfacing. This reluctance was soon dispelled as the logic
underlying genetic investigations became increasingly evident.
When the undergraduate genetics course was completed in January 1922, I
received a telephone call from Dr. Hutchison. He must have sensed my intense
interest in the content of his course because the purpose of his call was
to invite me to participate in the only other genetics course given at Cornell.
It was scheduled for graduate students. His invitation was accepted with
pleasure and great anticipations. Obviously, this telephone call cast the
die for my future. I remained with genetics thereafter.
At the time I was taking the undergraduate genetics course, I was enrolled
in a cytology course given by Lester W. Sharp of the Department of Botany.
His interests focused on the structure of chromosomes and their behaviors
at mitosis and meiosis. Chromosomes then became a source of fascination
as they were known to be the bearers of "heritable factors". By
the time of graduation, I had no doubts about the direction I wished to
follow for an advanced degree. It would involve chromosomes and their genetic
content and expressions, in short, cytogenetics. This field had just begun
to reveal its potentials. I have pursued it ever since and with as much
pleasure over the years as I had experienced in my undergraduate days.
After completing requirements for the Ph.D. degree in the spring of
1927, I remained at Cornell to initiate studies aimed at associating
each of the ten chromosomes comprising the maize complement with the
genes each carries. With the participation of others, particularly
that of Dr. Charles R. Burnham, this task was finally accomplished.
In the meantime, however, a sequence of events occurred of great significance
to me. It began with the appearance in the fall of 1927 of George
W. Beadle (a Nobel Laureate) at the Department of Plant Breeding
to start studies for his Ph.D. degree with Professor Rollins
A. Emerson. Emerson was an eminent geneticist whose conduct of
the affairs of graduate students was notably successful, thus attracting
many of the brightest minds. In the following fall, Marcus
M. Rhoades arrived at the Department of Plant Breeding to continue
his graduate studies for a Ph.D. degree, also with Professor Emerson.
Rhoades had taken a Masters degree at the California
Institute of Technology and was well versed in the newest findings
of members of the Morgan group working
with Drosophila. Both Beadle and Rhoades recognized the need and the
significance of exploring the relation between chromosomes and genes
as well as other aspects of cytogenetics. The initial association
of the three of us, followed subsequently by inclusion of any interested
graduate student, formed a close-knit group eager to discuss all phases
of genetics, including those being revealed or suggested by our own
efforts. The group was self-sustaining in all ways. For each of us
this was an extraordinary period. Credit for its success rests with
Professor Emerson who quietly ignored some of our seemingly strange
behaviors.
Over the years, members of this group have retained the warm personal relationship
that our early association generated. The communal experience profoundly
affected each one of us.
The events recounted above were, by far, the most influential in directing
my scientific life.
Born:
Hartford, Connecticut, U.S.A, 16 June, 1902
Secondary Education:
Erasmus Hall High School, Brooklyn, New York.
Earned Degrees:
B. S. Cornell University, Ithaca, New York, 1923
M. A. Cornell University, Ithaca, New York, 1925
Ph. D. Cornell University, Ithaca, New York, 1927
Positions held:
Instructor in botany, Cornell University, 1927-1931
Fellow, National Research Council, 1931-1933
Fellow, Guggenheim Foundation, 1933-1934
Research Associate, Cornell University, 1934-1936
Assistant Professor, University
of Missouri, Columbia, Missouri, 1936-1941
Staff Member, Carnegie
Institution of Washington, Cold Spring Harbor, New York, 1942-1967
Distinguished Service Member, Carnegie Institution of Washington, Cold Spring
Harbor, New York, 1967 to Present
Visiting Professor, California Institute of Technology, 1954
Consultant, Agricultural Science Program, The Rockefeller Foundation, 1963-1969
Andrew D. White Professor-at-Large, Cornell University, 1965-1974
Honorary Doctor of Science:
University of Rochester, 1947
Western College for Women, 1949
Smith College, 1957
University of Missouri, 1968
Williams College, 1972
The Rockefeller University, 1979
Harvard University, 1979
Yale University, 1982
University of Cambridge, 1982
Bard College, 1983
State University of New York, 1983
New York University, 1983
Honorary Doctor of Humane Letters:
Georgetown University, 1981
Awards:
Achievement Award, Association of University Women, 1947
Merit Award, Botanical Society of America, 1957
Kimber Genetics Award, National Academy of Sciences, 1967
National Medal of Science, 1970
Lewis S. Rosenstiel Award for Distinguished Work in Basic Medical
Research, 1978
The Louis and Bert Freedman Foundation Award for Research in
Biochemistry, 1978
Salute from the Genetics Society of America, August 18, 1980
Thomas Hunt Morgan Medal, Genetics Society of America, June, 1981
Honorary Member, The Society for Developmental Biology, June, 1981
Wolf Prize in Medicine, 1981
Albert Lasker Basic Medical Research Award, 1981
MacArthur Prize Fellow Laureate, 1981
Honorary Member, The Genetical Society, Great Britain, April, 1982
Louisa Gross Horwitz Prize for Biology or Biochemistry, 1982
Charles Leopold Mayer Prize, Académie des Sciences, Institut de France,
1982
From Les Prix Nobel 1983.
Dr McClintock died in 1992.
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