ON THE NATURE OF X-RAY INDUCED DELETIONS IN TRADESCANTIA CHROMOSOMES
نویسندگان
چکیده
منابع مشابه
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15 صفحه اولThe Effects of Ultraviolet and X-Ray Treatment on the Pollen Tube Chromosomes of Tradescantia.
HE cytogenetic interest in ultraviolet radiation resides in the hope T that the qualitatively discriminating nature of this type of radiant energy will yield still further evidence as to the structure and behavior of the hereditary mechanism. It is now known that ultraviolet, like X-rays, can produce gene mutations and chromosomal changes; it is likewise known that, unlike X-rays, ultraviolet i...
متن کاملAn Analysis of X-Ray Induced Chromosomal Aberrations in Tradescantia.
HE cause and nature of chromosomal alterations has become an imT portant genetic problem since it has been shown that both mutation and speciation often are associated with structural alterations of the chromosomes (DOBZHANSKY 1937). The frequency of spontaneous structural changes is too low in most organisms to permit a statistical analysis of types or frequencies of alterations, although rece...
متن کاملThe Effect of Intensity of Infrared on X-Ray Induced Chromosome Aberrations in Tradescantia.
REVIOUS investigations have shown that infrared is effective in increasping the number of chromosomal aberrations induced by X-radiation ( KAUFMANN, HOLLAENDER and GAY 1946; SWANSON and HOLLAENDER 1946; YOST 1951). There has been little agreement at the interpretive level, however, on the mode of action of the infrared in producing this increase. Two hypotheses have been advanced. One proposes ...
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ژورنال
عنوان ژورنال: Genetics
سال: 1940
ISSN: 1943-2631
DOI: 10.1093/genetics/25.5.466