text: Yo, listen up, I got some knowledge to drop,
  About chromosomes and meiosis, don't you stop.
  Chiasmata, they be crucial, you see,
  For accurate segregation, that's the key.
  
  During meiosis, homologs interlock tight,
  Till anaphase I, when they take flight.
  But Drosophila melanogaster, it's unique,
  Tolerant of nonexchange, ain't that neat?
  
  Puro and Nokkala, they first observed,
  Drosophila oocytes, how they swerved.
  Nonexchange chromosomes, they make a move,
  Head towards the poles, in a groove.
  
  Metaphase arrest, they used to say,
  When homologs align in a special way,
  Between the main mass and the spindle's poles,
  That's when nonexchange homologs stroll.
  
  But hold up, there's more to this tale,
  Metaphase arrest, it's not so frail.
  Achiasmate chromosomes, they got a role,
  In an extended prometaphase, that's the goal.
  
  Prometaphase ends, chromosomes retract,
  Into the main mass, that's a fact.
  Properly co-oriented centromeres, they align,
  This repackaged state, that's metaphase arrest time.
  
  So remember, in Drosophila female meiosis,
  Metaphase arrest ain't just a hypothesis.
  It's a state where chromosomes tightly bind,
  Ensuring proper segregation, one of a kind.