Phenotypic Effects of Heterozygous, X-ray-Induced Mutations in Drosophila

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Science  17 Jul 1959:
Vol. 130, Issue 3368, pp. 162-163
DOI: 10.1126/science.130.3368.162


Heterozygous mutations produced by 3000 r delay pupation in about 9 percent of larvae of Drosophila melanogaster under nutritional stress and kill approximately 6 percent. The effects are less, though appreciable, when there is excess nutrient; no effects are detectable after oögonia are irradiated. Irradiated sperm and oöcytes cause detriment, partly via different types of mutations, in approximately equal amounts.