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In 1926, McClintock and Lowell "Fitz" Randolph published this note on a triploid maize plant, the first known triploid in maize. The genetics and cytology of this plant became the basis of McClintock's Ph.D. thesis in 1929.
Reprinted from AMERICAN NATURALIST published by the University of Chicago Press, copyright 1926 by The University of Chicago. All rights reserved. and http://www.journals.uchicago.edu/
Periodical. Randolph, L. F., and Barbara McClintock. "Polyploidy in Zea Mays L." American Naturalist 60, (1926): 99-102. Article. 4 Images.. American Naturalist