prophase

n. 前期
【医】 前期

形容词:prophasic 

pro.phase

n.（名词）
The first stage of mitosis, during which the chromosomes condense and become visible, the nuclear membrane breaks down, and the spindle apparatus forms at opposite poles of the cell.
前期阶：细胞减数分裂的第一个阶段，其间染色体浓缩且能被看见，核细胞膜衰弱，纺锤体在细胞的相对纺锤极形成
The first stage of meiosis, constituted by a series of events that include DNA replication, the synapsis of homologous chromosomes, crossing over, the formation of chiasmata, and contraction of the chromosomes.
前期阶：减数分裂的第一个阶段，由一系列的事件组成，包括脱氧核糖核酸的复制，同种染色体结合、交叉，染色体形成以及染色体的收缩

【引伸】
propha.sic