#leptotene  the first stage of the prophase of meiosis
  supertype:  #phase.time_period__stage  any distinct time period in a sequence of events; "we are in a transitional stage in which many former ideas must be revised or rejected"
  part of:  #prophase.phase_of_cell_division
  part:  #synapsis  the side by side pairing of homologous maternal and paternal chromosomes at the start of meiosis

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