text: Yo, check it, let me break it down for you,
  Germ-line stem cells, they got something to prove.
  They self-renew through mitosis, that's the deal,
  Or switch to meiosis and produce the real deal.
  
  The switch from proliferation, it's all controlled,
  Aberrations mess it up, too little or too bold.
  We dug deep, studied mutations and more,
  In Caenorhabditis elegans mett-10, we explored.
  
  METT-10, a methyltransferase, that's the name,
  A nuclear protein in the germ line, it's in the game.
  It inhibits germ-cell fate, that's the scoop,
  But it's all about development, from head to toe.
  
  Vulva, somatic gonad, and embryo too,
  METT-10 ensures they develop, that's what it do.
  And for those germ cells that differentiate,
  Meiotic development, it orchestrates.
  
  Now here's the kicker, listen up close,
  METT-10 enables mitotic cell cycle, that's no joke.
  It inhibits germ-cell fate, but promotes cell division,
  Separating fate from execution, precision.
  
  So there you have it, the genetic basis explained,
  Germ-line stem cells, their secrets unchained.
  METT-10's role, it's complex and profound,
  In the rap game of biology, it holds the crown.