The final stage of the prophase in meiosis, characterized by shortening and thickening of the paired chromosomes, formation of the spindle fibers, disappearance of the nucleolus, and degeneration of the nuclear membrane.

• 终变期有丝分裂的最终阶段，以二价染色体的收缩、纺缍形纤维的形成、核仁的消失以及核膜的退化为特点