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EncyclopediaMcClintock, BarbaraMcClintock, Barbara, 1902–92, American geneticist. She discovered that certain genetic material, “transposable elements,” shifted its location in the chromosomes from generation to generation. At first ignored, her research was later recognized as a major contribution to DNA research. In 1983 she was awarded the Nobel Prize in Physiology or Medicine. The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved. More on Barbara McClintock from Infoplease:
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