title: Chromosome rotation and formation of synapsis.
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000502:physiology; D002842:Chromatids; D002875:Chromosomes / Q000502:physiology*; D008297:Male; D008540:Meiosis; D009068:Movement; D051381:Rats; D013090:Spermatocytes / Q000648:ultrastructure; D013091:Spermatogenesis