Lamnissou K
Department of Biochemistry, Cell and Molecular Biology and Genetics, University of Athens, Greece.
Dev Genet. 1996;18(4):289-95. doi: 10.1002/(SICI)1520-6408(1996)18:4<289::AID-DVG2>3.0.CO;2-5.
In interspecific matings between the species Drosophila virilis and Drosophila texana, female sterility can be observed in F2 backcross females and in F2 hybrid females. The results presented in this report show that the female sterility, whenever it exists, is due to prevention of vitellogenin synthesis in the fat body, but other abnormalities such as defects with the hybrid ovaries are not excluded. The observation that sterility appears among females from backcrosses suggests that incompatibilities between interspecific genes may cause female sterility even in the presence of a complete habloid genome from one or the other species. Yet, the parallel observation that female sterility appears only in hybrid females with recombinant chromosomes indicates that sterility results when conspecific combinations of genes on the same chromosome are broken by interspecific recombination.
在果蝇属的粗壮果蝇（Drosophila virilis）和得克萨斯果蝇（Drosophila texana）之间的种间交配中，在F2回交雌性和F2杂交雌性中可观察到雌性不育。本报告中呈现的结果表明，只要存在雌性不育，就是由于脂肪体中卵黄原蛋白合成受阻，但并不排除其他异常情况，如杂交卵巢的缺陷。回交雌性中出现不育的观察结果表明，种间基因之间的不相容性可能导致雌性不育，即使存在来自一个或另一个物种的完整单倍体基因组。然而，雌性不育仅出现在具有重组染色体的杂交雌性中的平行观察结果表明，当同一条染色体上的基因的同种组合被种间重组打破时，就会导致不育。
