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Science 14 January 1966:
Vol. 151. no. 3707, pp. 215 - 216
DOI: 10.1126/science.151.3707.215
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Articles

DNA Content of a Chromosome of Trillium erectum: Effect of Cold Treatment

John Woodard 1, Martin Gorovsky 1, and Hewson Swift 1

1 Whitman Laboratory, Department of Zoology, University of Chicago, Chlicago, Illinois

The DNA (Feulgen) contents of a specific cold-treated (3°C) chromosome and of a control (25°C) were measured by means of photographic-plate microdensitometry. Despite marked morphological alterations in the cold-treated B chromosome of Trillium erectum, its DNA content was unchanged from that of the control.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)