Life cycles, fitness decoupling and the evolution of multicellularity

  title={Life cycles, fitness decoupling and the evolution of multicellularity},
  author={Katrin Hammerschmidt and Caroline Rose and Benjamin Kerr and Paul B. Rainey},
Cooperation is central to the emergence of multicellular life; however, the means by which the earliest collectives (groups of cells) maintained integrity in the face of destructive cheating types is unclear. One idea posits cheats as a primitive germ line in a life cycle that facilitates collective reproduction. Here we describe an experiment in which simple cooperating lineages of bacteria were propagated under a selective regime that rewarded collective-level persistence. Collectives… CONTINUE READING