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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.
Periodical:
Proceedings of the National Academy of Sciences of the United States of America
Meiosis, Chromosomes, Chromosome Breakage, and Crossing Over, Genetic
Format:
Text
Extent:
12 pages
Language:
English
Legacy Source Citation:
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.. Proceedings of the National Academy of Sciences of the United States of America