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- W2084992057 abstract "A B S T R A C T Meiocytes in three morphologically similar but cytologically different wild populations of Claytonia virginica L. were examined. Over a three-year period levels of spontaneous chromosome breakage were consistent for each population but differed between populations. Random samples of inflorescences from two of the populations were treated with 0.005 % aqueous solutions of nucleic acid precursors: adenine, adenosine, thymine, thymidine, guanosine 5'-monophosphate (GMP), and cytosine 5'-monophosphate (CMP). Statistically significant increases in chromosome breakage were observed in the population with little background breakage when inflorescences were treated with adenosine, thymine, thymidine, GMP, and CMP. In the population with moderate spontaneous breakage, a significant increase was observed only in plants treated with adenosine. Breakage induced with nucleic acid precursors was similar to that which occurred spontaneously; the predominant aberration was the single bridge. THE APPEARANCE of bridges, bridges and fragments, and fragments have been reported in natural populations of Ciaytonia virginica L. by Rothwell (1959) and Lewis (1962). These aberrations were considered to be meiotic irregularities common to polyploid populations. The present study indicates that some of these meiotic irregularities are the result of spontaneous" @default.
- W2084992057 created "2016-06-24" @default.
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- W2084992057 date "1970-11-01" @default.
- W2084992057 modified "2023-09-24" @default.
- W2084992057 title "SPONTANEOUS AND INDUCED CHROMOSOME BREAKAGE IN CLAYTONIA VIRGINICA" @default.
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- W2084992057 doi "https://doi.org/10.1002/j.1537-2197.1970.tb09918.x" @default.
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