Life Cycle and the Expression of Heterosis in Inversion Heterozygotes in Drosophila funebris and Drosophila pavani

摘要: In three stocks of D. funebris and in two pavani it has been demonstrated that, general, there is a higher frequency inversion heterozygotes among adult flies than larvae. Nevertheless, exist some differences according to the species, stock, or chromosome concerned. funebris, 100 day old contain greater "young" ten flies. pavani, incidence second about same "old" flies, but significantly these this fourth larvae young adults, but, at least one The general conclusion which may be drawn that differential mortality favoring heterozygotes. selective pressures confer fitness on seem act both ...