那些细胞分裂后形成许多其他不同类型的细胞。
Those cells divide and give many other different types of cells.
因为端粒保护染色体末端，阻止细胞分裂。
Because telomeres protect the ends of chromosomes to stop cells dividing.
我也这么想，但是我错过了一些考试中涉及的细胞分裂问题。
I thought so too, but I missed some questions about cell division on the exam.
当每次染色体分裂时——即当每次一个细胞分裂成两个时——染色体的尾部，也就是端区，就会发生断裂。
Every time the Chromosome divides—every time one cell divides into two—pieces of the ends of the Chromosome, the telomere, get broken off.
你操作显微镜和洋葱细胞样本的方式，以及对细胞分裂各阶段的仔细观察、描绘和解释，让我印象非常深刻。
I was so impressed with the way you handle the microscope and the samples of onion cells, and with how carefully you observed and diagramed and interpreted each stage of cell division.
当异常半球中的神经元在成熟之前经历过多的细胞分裂时，就会发生这种罕见的疾病，即大脑一侧长得比另一侧大得多。
The rare disorder, in which one side of the brain grows substantially larger than the other, occurs when neurons in the abnormal hemisphere undergo too many cell divisions before they mature.
卵子受精之前，这种基因会产生一种蛋白质，这种蛋白质存在于卵子的细胞质中，它控制着细胞分裂的模式，从而控制着旋向性。
Before egg fertilization, the gene produces a protein, found in the cytoplasm of the egg, that controls the pattern of cell division and thus handedness.
观察二月兰一代杂交种子的细胞分裂。
Observe the meiosis on the F1 hybrid of Orychophragmus violaceus.
它可以帮助建立减数细胞分裂遗传的表达状态。
It can help establish meiotically heritable expression states.
胚性细胞分裂产生两个细胞，进而分化发育成多细胞原胚、球形胚、心形胚及子叶胚。
Then embryogenic cell divided into two cells, which sequentially differentiated through multicell proembryo, globular, heart-shaped and cotyledonary embryo stages.
三名美国科学家因为发现了能在细胞分裂时防止染色体散裂的“保护帽”而赢得今年诺贝尔医学奖。
The discovery of a "protective cap" that prevents chromosomes from falling apart when cells divide has earned three American researchers this year's Nobel prize in medicine.
细胞学观察表明，培养后叶肉细胞明显增大，细胞分裂形成分生组织，由之形成芽原基。
Cytological observations showed that mesophyll cells were greatly enlarged, undergoing repeated cell divisions, then forming meristematic mass, from which buds were initiated.
突变可以是由辐射、化学作用、外部病原体(如：病毒)或细胞分裂时基因组复制错误造成。
Mutations can be induced by radiation, chemical treatment, foreign pathogens (e.g. viruses), or due to errors that occur during replication of the genome each time a cell divides.
而且细胞分裂时可能会产生致命的基因复制错误。据此怀疑主义者们说，走向衰老仍是人类不可避免的未来。
Add that to the dangerous genetic copying errors that occur as cells divide and, for these naysayers, growing old remains an unavoidable future for humanity.
这些断裂可由于紫外照射或X射线引起，同时也可在DNA分子一分为二的细胞分裂过程中发生。
These breaks can, for instance, be caused by ultraviolet light or X-rays, but also occur during cell division, when DNA molecules split and form two new DNA molecules.
复制DNA的酶在细胞分裂时不是100%有效，少量dna在复制过程中从每一串的端部丢失。
The enzymes that replicate DNA when a cell divides are not 100% efficient, and a small amount of DNA gets lost from the end of each strand during replication.
对于愈伤组织的再分化，不仅需要细胞分裂素，而且诱导培养基中生长素浓度的影响也是显著的。
With regard to the callus redifferentiation, not only kinetin is needed, but also the effect of auxin concentration of the induction medium is also remarkable.
这种方法可以验证核形态（与细胞分裂、增殖、存活和迁移相关的基本功能）约87%的精度改变。
The method recognized with 87% accuracy changes in the nuclear shape that were related to basic functions such as cell division, proliferation, survival and migration.
布莱克本和卓斯塔克测定，端粒中一段特殊的DNA序列在细胞分裂染色体自我复制时保护了染色体免受损耗。
Blackburn and Szostak determined that it was a specific DNA sequence in the telomeres that kept chromosomes from fraying whenever they were copied when a cell splits in two.
衰老过程中IAA氧化酶和细胞分裂素氧化酶活性的上升可能是导致内源激素含量下降的重要原因。
The increasing of IAA oxidase and cytokinin oxidase activities may play a vital role in regulating endogenous IAA and cytokinin contents during the senescence.
在正常的细胞中，如果DNA受损，p21就会像刹车一样阻断细胞周期进程以防止细胞分裂和癌变。
In normal cells, p21 ACTS like a brake to block cell cycle progression in the event of DNA damage, preventing the cells from dividing and potentially becoming cancerous.
块茎绝对生长率的加权平均与块茎细胞数量的直线相关证明了块茎的生长在很大程度上受细胞分裂控制。
A linear relationship between the weighted mean absolute growth rate of individual tubers and their cell Numbers suggested that tuber growth was largely controled by the cell division of the tuber.
在这个模型中，当细胞分裂时，他们随机选择一套100个不同的“显型”—由清晰的遗传特征产生的行为。
In the model, when cells divide they randomly choose from a set of 100 different "phenotypes" - behaviors that result from distinct genetic characteristics.
此外，由于响应时间可以缩短到毫秒级，所以可用于测量细胞的瞬态、突发性变化（如细胞分裂、死亡等）。
Moreover, the sensors were able to detect the transient mutation in cells(such as, the mitochysis and death of cell)because of the response time shortened to microsecond.
研究组通过最初的方法使用更小的探针有效地标记肌动蛋白以及参与细胞分裂，结构，运动和信息传导的分子。
The team used these much smaller probes with the PRIME method to effectively tag actin, a molecule involved in cell division, structure, motility, and communication.
威尔·马特说之所以有这么多的试验失败，是因为很难保证空卵囊和供体细胞能处在细胞分裂周期的同一阶段。
Wilmut said there were so many failures because it was difficult to ensure that the empty oocyst and the donor cell were at the same stage of the cell division cycle.
威尔·马特说之所以有这么多的试验失败，是因为很难保证空卵囊和供体细胞能处在细胞分裂周期的同一阶段。
Wilmut said there were so many failures because it was difficult to ensure that the empty oocyst and the donor cell were at the same stage of the cell division cycle.
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