Evolution of fitness. I. Improvement in the productivity and size of irradiated populations of Drosophila serrata and Drosophila birchii.


IGH energy radiations speed up the mutation process. Random mutations Hare expected, on theoretical grounds, to be for the most part deleterious. Unconditionally harmful mutations are, however, eliminated by natural selection more or less rapidly depending on the magnitude of their effect on fitness, so that heavily irradiated populations “recover” rather… (More)


10 Figures and Tables