The Behavior in Successive Nuclear Divisions of a Chromosome Broken at Meiosis
After reporting her observations of ring chromosomes, McClintock followed broken chromatids through successive cycles of cell
division, in which she could observe the behavior of the "monstrous" chromosome 9 through meiosis and crossing-over.
McClintock reported in a long series of articles that the chromatid breakage-fusion-bridge (BFB) cycle occurred only in the
germ cells and endosperm, while the chromosome BFB continued in the sporophyte, which meant that she could selectively produce
persistent variegation in plant tissues.
Item is a photocopy.
Number of Image Pages:
12 (1,081,150 Bytes)
Periodical: McClintock, Barbara. "The Behavior in Successive Nuclear Divisions of a Chromosome Broken at Meiosis." Proceedings
of the National Academy of Sciences of the United States of America 25, (1939): 405-416. Article. 12 Images.
National Academy Press
Reproduced with permission of the Barbara McClintock Papers, American Philosophical Society.
Medical Subject Headings (MeSH):
Crossing Over, Genetic
Breakage-Fusion-Bridge: The University of Missouri, 1936-1941