单词	prophase
释义	prophase noun pro·​phase ˈprō-ˌfāz  1 : the initial stage of mitosis and of the mitotic division of meiosis characterized by the condensation of chromosomes consisting of two chromatids, disappearance of the nucleolus and nuclear membrane, and formation of mitotic spindle 2 : the initial stage of the first division of meiosis in which the chromosomes become visible, homologous pairs of chromosomes undergo synapsis and crossing over, chiasmata appear, chromosomes condense with homologues visible as tetrads, and the nuclear membrane and nucleolus disappear compare diakinesis, diplotene, leptotene, pachytene, zygotene prophasic (ˌ)prō-ˈfā-zik  adjective Word History Etymology International Scientific Vocabulary First Known Use 1884, in the meaning defined at sense 1 Medical Definition prophase noun pro·​phase -ˌfāz  1 : the initial stage of mitosis and of the mitotic division of meiosis characterized by the condensation of chromosomes consisting of two chromatids, disappearance of the nucleolus and nuclear membrane, and formation of the mitotic spindle 2 : the initial stage of the first division of meiosis in which the chromosomes become visible, homologous pairs of chromosomes undergo synapsis and crossing-over, chiasmata appear, chromosomes condense with homologues visible as tetrads, and the nuclear membrane and nucleolus disappear and which is divided into the five consecutive stages leptotene, zygotene, pachytene, diplotene, and diakinesis
随便看	routeway routeways routh rouths routine routine orders routineer routineers routinely routiner routines routinest routing routing (out) routing out routings routinisation routinisations routinise routinised routinises routinising routinisms routinist routinists

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