diakinesis /dī′əkinē″sis, dī′əkī-/ [Gk, dia + kinesis, motion] , the final stage in the first meiotic prophase in gametogenesis, in which the chromosomes achieve their maximum thickness. The chiasmata and nucleolus disappear, the nuclear membrane degenerates, and the spindle fibers form in preparation for the formation of dyads. See also diplotene, leptotene, pachytene, zygotene.
