間眅埶AV

Synopsis

For a billion years, life was simple, consisting of bacteria and archaea.  Then, about 2.6 billion years ago, ���something happened��� that led to the more complex eukaryotic form of life, with its separated nucleus and organelles.  Many people have wondered how this transition happened; Muro et al. instead ask why.  Their answer is that evolution in prokaryotes led to more and more complex forms that required more and more extensive evolutionary ���searches��� for new proteins.  At some point, a second-order ���phase transition��� in evolutionary strategy adopting the modularity of eukaryotes and of multicellular organisms allowed for faster evolution.  We will examine their argument.