The relative frequency of induced mutations recovered from Drosophila melanogaster gametogenic stages irradiated at different dose rates |
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Authors: | Robert R Rinehart William R Lee |
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Institution: | 1. Biology Department, San Diego State College, San Diego, Calif. 92115, USA;2. Department of Zoology and Physiology, Louisiana State University, Baton Rouge, La. U.S.A. |
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Abstract: | Inseminated Drosophila females were exposed to radiation doses of approx. 2000 or 4000 R at dose rates ranging from 8 to 240 000 R/h. The observed frequencies of sex-linked lethal mutations induced in spermatozoa and oogonia suggest that dose-rate effects were absent in spermatozoa over the whole range and in oogonia up to 3000 R/h. There was a consistent increase in oogonial mutation frequency from 3000 to 240 000 R/h. These results are discussed in relation to the well-established dose-rate effects observed in the mouse. |
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