The induction of orientational instability and bivalent interlocking at meiosis.
D000818:Animals; D002875:Chromosomes; D003434:Crossing Over, Genetic; D006110:Grasshoppers; D006358:Hot Temperature; D008297:Male; D008540:Meiosis; D008870:Microtubules; D013737:Testis / Q000166:cytology