Extavour, Cassandra2017-07-112009Extavour, Cassandra. 2009. “Oogenesis: Making the Mos of Meiosis.” Current Biology 19, no. 12: R489–R491.0960-9822http://nrs.harvard.edu/urn-3:HUL.InstRepos:33370055Meiosis is an ancient type of cell division whose advent allowed the evolution of sexual reproduction. The evolutionary history of the specialization that allowed gamete production to emerge from a simple reduction division has been unclear. New data now suggest that the molecular mechanisms involved in animal oocyte specialization may have origins that predate the emergence of bilaterian animals.en-USJournal Article10.1016/j.cub.2009.05.015