[The type of recombination in Drosophila melanogaster mei-9LI males induced by space flight factors].

Spontaneous male recombination in mei-9LI stock of Drosophila melanogaster having defect in excision repair was shown to take place at early premeiotic stage. Male recombination was registered at all stages of gametogenesis, under the action of acceleration (6-8 g). The frequencies of male recombination at pre- and postmeiotic stages of gametogenesis increased significantly under the effect of space flight factors.