求生物文献翻译:
Thedissolutionofthenuclearenvelopeatmetaphasemarkedthetimeofmaximumattenuationofthecy...
The dissolution of the nuclear envelope at metaphase marked the time of maximum attenuation of the cytoplasm, in which very few free ribosomes were seen. The organelles, which showed little structural change from the preceding stage, showed a tendency to infiltrate the spindle region as the chromosomes began to move apart, taking up a central position in the developing diads. The cytomictic channels were occluded during the meta-phase/anaphase period, thus destroying cytoplasmic continuity between the meiocytes. The subsequent development of the maturing meiocytes became increasingly asyn-chronous. Early stages in the formation of tetrads frequently accompanied newly formed diads, testifying to the brevity of the second division of meiosis.
At the end of telophase 1 no cell walls formed dividing the diads. However, large num-bers of tiny vesicles were seen, possibly originating from the increased numbers of dic-tyosomes seen in the cytoplasm, and these were thought to provide the basis of theitetrad cell plates that formed soon after the second division of meiosis. These vesicles, together 展开
At the end of telophase 1 no cell walls formed dividing the diads. However, large num-bers of tiny vesicles were seen, possibly originating from the increased numbers of dic-tyosomes seen in the cytoplasm, and these were thought to provide the basis of theitetrad cell plates that formed soon after the second division of meiosis. These vesicles, together 展开
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核的溶解时间在中期标志着信封上的最大衰减的细胞质,却很少有人自由核糖体被人看到。小的细胞器结构变化,其中显示了从前一阶段,表现出一种倾向,将渗透到主轴地域为染色体开始移动分开,以发展diads中处于中心地位。cytomictic通道被遮挡的meta-phase时期期间,从而破坏/后期meiocytes胞间的连续性。成熟的后续发展meiocytes变得日益asyn-chronous。在形成早期阶段母细胞减数分裂为新成立的diads经常伴随迫切,向短促的第二种分类:减数分裂。
叙述末1:没有细胞壁的形成diads划分。然而,大型num-bers极小的小泡并看到的,可能源自增多的dic-tyosomes细胞质中所见的,这些是思想提供了依据,形成细胞板块之间theitetrad后不久的二级减数分裂分析。这些小泡,在一起
叙述末1:没有细胞壁的形成diads划分。然而,大型num-bers极小的小泡并看到的,可能源自增多的dic-tyosomes细胞质中所见的,这些是思想提供了依据,形成细胞板块之间theitetrad后不久的二级减数分裂分析。这些小泡,在一起
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