karyokinesis

简明释义

英[ˌkærɪəʊkɪˈniːsɪs]美[ˌkærɪəkɪˈniːsɪs]

n. [细胞] 核分裂；[细胞] 有丝分裂

英英释义

单词用法

同义词

反义词

例句

1.There were some cell morphological changes of the TG, DG and ZG, including the chromatin condensed in margin and the pathological karyokinesis reduced obviously compared with the MG.

光镜下观察，各治疗组与荷瘤对照组比较，异型细胞较少，染色质浓缩边集，病理性核分裂较少。

2.There were some cell morphological changes of the TG, DG and ZG, including the chromatin condensed in margin and the pathological karyokinesis reduced obviously compared with the MG.

光镜下观察，各治疗组与荷瘤对照组比较，异型细胞较少，染色质浓缩边集，病理性核分裂较少。

3.During cell division, karyokinesis refers to the process where the nucleus divides.

在细胞分裂过程中，karyokinesis 指的是细胞核分裂的过程。

4.In mitosis, karyokinesis ensures that each daughter cell receives an identical set of chromosomes.

在有丝分裂中，karyokinesis 确保每个子细胞获得一套相同的染色体。

5.Errors in karyokinesis can lead to genetic disorders.

在 karyokinesis 中的错误可能导致遗传疾病。

6.Researchers observed that the rate of karyokinesis increased under certain environmental stress conditions.

研究人员观察到，在某些环境压力条件下，karyokinesis 的速率增加。

7.The study of karyokinesis is essential for understanding cancer cell proliferation.

研究 karyokinesis 对于理解癌细胞的增殖至关重要。

作文

Cell division is a fundamental process in all living organisms, allowing for growth, development, and repair of tissues. One crucial aspect of cell division is karyokinesis">karyokinesis, which refers to the process of nuclear division. This process ensures that each daughter cell receives an identical set of chromosomes, maintaining genetic consistency across generations. Understanding karyokinesis">karyokinesis is essential for comprehending how cells reproduce and how various factors can influence this vital function.During karyokinesis">karyokinesis, the cell undergoes several stages, including prophase, metaphase, anaphase, and telophase. In prophase, the chromatin condenses into visible chromosomes, and the nuclear envelope begins to break down. This stage is critical because it prepares the genetic material for separation. Following prophase is metaphase, where chromosomes align at the cell's equatorial plane, ensuring that they are evenly distributed. This alignment is crucial for the next phase, anaphase, where the sister chromatids are pulled apart by spindle fibers toward opposite poles of the cell.The final stage of karyokinesis">karyokinesis is telophase, during which the separated chromatids reach the poles and begin to de-condense back into chromatin. The nuclear envelope reforms around each set of chromosomes, resulting in two distinct nuclei within the cell. This process is followed by cytokinesis, where the cytoplasm divides, leading to the formation of two separate cells.Understanding karyokinesis">karyokinesis is not only important in biology but also has significant implications in medicine. For instance, errors during karyokinesis">karyokinesis can lead to aneuploidy, a condition where cells have an abnormal number of chromosomes. This condition is often associated with cancer and other genetic disorders. Research into the mechanisms of karyokinesis">karyokinesis can provide insights into potential therapeutic targets for treating such diseases.Moreover, advancements in technology have allowed scientists to study karyokinesis">karyokinesis in greater detail. Techniques such as live-cell imaging enable researchers to observe the dynamics of nuclear division in real-time, providing valuable information about the timing and regulation of this process. Understanding how various factors, such as environmental stressors or genetic mutations, affect karyokinesis">karyokinesis can lead to better strategies for preventing or treating diseases linked to cell division errors.In conclusion, karyokinesis">karyokinesis is a vital process in cell division that ensures the accurate distribution of genetic material to daughter cells. Its significance extends beyond basic biology, impacting fields such as medicine and genetics. As research continues to uncover the complexities of karyokinesis">karyokinesis, our understanding of cellular processes and their implications for health and disease will undoubtedly deepen, paving the way for innovative treatments and interventions.

细胞分裂是所有生物体中的基本过程，它允许生长、发育和组织的修复。细胞分裂的一个关键方面是karyokinesis">核分裂，它指的是细胞核分裂的过程。这个过程确保每个子细胞接收到相同的染色体组，从而在世代之间保持遗传一致性。理解karyokinesis">核分裂对于理解细胞如何繁殖以及各种因素如何影响这一重要功能至关重要。在karyokinesis">核分裂过程中，细胞经历几个阶段，包括前期、中期、后期和末期。在前期，染色质凝缩成可见的染色体，核膜开始破裂。这个阶段至关重要，因为它为遗传物质的分离做好准备。紧接着是中期，染色体在细胞的赤道平面上排列，确保它们均匀分布。这种排列对下一个阶段，即后期至关重要，在此阶段，姐妹染色单体通过纺锤丝被拉向细胞的两个极。karyokinesis">核分裂的最后一个阶段是末期，此时分开的染色单体到达两极并开始重新凝缩回染色质。核膜在每组染色体周围重新形成，导致细胞内形成两个不同的细胞核。这个过程之后是细胞质分裂，在此过程中细胞质分裂，导致形成两个独立的细胞。理解karyokinesis">核分裂不仅在生物学上重要，而且在医学上也具有重大意义。例如，karyokinesis">核分裂过程中出现的错误可能导致染色体数目异常的情况，这种情况称为非整倍体。非整倍体通常与癌症和其他遗传疾病相关。对karyokinesis">核分裂机制的研究可以提供潜在的治疗靶点，以治疗这些疾病。此外，技术的进步使科学家能够更详细地研究karyokinesis">核分裂。例如，活细胞成像技术使研究人员能够实时观察核分裂的动态，提供有关该过程的时序和调控的宝贵信息。理解环境压力或基因突变等各种因素如何影响karyokinesis">核分裂可以导致更好的预防或治疗与细胞分裂错误相关的疾病的策略。总之，karyokinesis">核分裂是细胞分裂中的一个重要过程，它确保遗传物质准确分配给子细胞。它的重要性超越了基础生物学，影响医学和遗传学等领域。随着研究不断揭示karyokinesis">核分裂的复杂性，我们对细胞过程及其对健康和疾病的影响的理解无疑将加深，为创新的治疗和干预开辟道路。