synapsis

简明释义

英[sɪˈnæpsɪs]美[sɪˈnæpsɪs]

n. 染色体结合，染色体联会；[解剖] 突触

复 数 s y n a p s e s

英英释义

单词用法

同义词

反义词

例句

1.The structure is closely related with homologous chromosomes synapsis, recombination and segregation.

它与同源染色体联会、遗传交换、染色体分离密切相关。

2.Changes in the number and function of synapsis can cause changes in synaptic plasticity, thereby can affect learning and memory.

突触的数量和功能发生改变可引起突触可塑性的改变，进而影响学习记忆能力。

3.After synapsis, unwound chromatin fibers in the form of loops are in association with the lateral elements.

在联合发生后，染色质纤维解聚成环状附着在侧带上。

4.Synapsis (pairing) the association of homologous chromosomes during the prophase stage of meiosis that leads to the production of a haploid number of bivalents.

偶线期时，以同源染色体活跃的、特定的配对(联会)为特征，形成了单倍数的二价染色体。

5.Genetics used of a chromosome that is not paired or united with its homologous chromosome during synapsis .

属于一种染色体的，在染色体结合过程中不与它的对等染色体配对或结合的。

6.Before synapsis, chromatin fibers condense at the chromosome axes forming the chromomeres.

在联会发生前，染色质纤维凝聚在轴成分上呈现出染色粒。

7.Synapsis (pairing) the association of homologous chromosomes during the prophase stage of meiosis that leads to the production of a haploid number of bivalents.

偶线期时，以同源染色体活跃的、特定的配对(联会)为特征，形成了单倍数的二价染色体。

8.Research on synapsis 联会 has provided insights into evolutionary biology.

对联会的研究为进化生物学提供了见解。

9.Errors during synapsis 联会 can lead to chromosomal abnormalities.

在联会过程中出现错误可能导致染色体异常。

10.During meiosis, the process of synapsis 联会 allows homologous chromosomes to pair up.

在减数分裂过程中，联会的过程使同源染色体得以配对。

11.In some species, synapsis 联会 occurs in a unique way that enhances genetic diversity.

在某些物种中，联会以独特的方式发生，从而增强了遗传多样性。

12.The synapsis 联会 stage is crucial for genetic recombination.

在遗传重组中，联会阶段至关重要。

作文

In the field of biology, particularly in genetics, the term synapsis refers to the process during meiosis where homologous chromosomes pair up and align closely together. This crucial step occurs during prophase I of meiosis, allowing for genetic recombination to take place. The significance of synapsis cannot be overstated, as it is essential for the proper segregation of chromosomes and the generation of genetic diversity among offspring.During synapsis, the chromosomes are held together by a protein structure known as the synaptonemal complex. This complex facilitates the exchange of genetic material between the paired chromosomes, a process known as crossing over. Crossing over results in new combinations of alleles, which can lead to variations in traits among individuals. This genetic variation is a key component of evolution and adaptation, as it provides populations with a broader range of characteristics that may enhance survival in changing environments.Moreover, synapsis plays a critical role in ensuring that each gamete receives the correct number of chromosomes. If synapsis does not occur properly, it can lead to errors in chromosome segregation, resulting in conditions such as aneuploidy, where cells have an abnormal number of chromosomes. Such genetic disorders can have significant implications for development and health, underscoring the importance of this biological process.Understanding synapsis is also vital for advancements in reproductive technologies and genetic engineering. For instance, researchers are exploring ways to manipulate synapsis to enhance crop yields or develop treatments for genetic diseases. By gaining insights into how synapsis operates at a molecular level, scientists can devise strategies to improve the efficiency of meiosis and ensure the stability of genetic information passed on to future generations.In conclusion, synapsis is a fundamental biological process with far-reaching implications. It is not only essential for the proper functioning of meiosis and the maintenance of genetic integrity but also serves as a foundation for understanding the principles of inheritance and evolution. As we continue to unravel the complexities of genetics, the study of synapsis will undoubtedly remain a pivotal area of research, offering insights that could lead to breakthroughs in medicine, agriculture, and our overall understanding of life itself.

联会是生物学，特别是遗传学领域中的一个术语，指的是在减数分裂过程中，同源染色体配对并紧密排列在一起的过程。这个关键步骤发生在减数分裂的前期 I 阶段，允许基因重组的发生。联会的重要性不容小觑，因为它对于染色体的正确分离和后代中遗传多样性的产生至关重要。在联会过程中，染色体通过一种称为突触复合体的蛋白质结构相互连接。这个复合体促进了配对染色体之间遗传物质的交换，这一过程被称为交叉。在交叉过程中产生的新等位基因组合可能导致个体特征的变化。这种遗传变异是进化和适应的关键组成部分，因为它为种群提供了更广泛的特征范围，从而可能增强在变化环境中的生存能力。此外，联会在确保每个配子获得正确数量的染色体方面也起着关键作用。如果联会未能正常进行，可能导致染色体分离错误，从而导致如非整倍体等情况，其中细胞具有异常数量的染色体。这类遗传疾病可能对发育和健康产生重大影响，强调了这一生物过程的重要性。理解联会对于生殖技术和基因工程的进步也至关重要。例如，研究人员正在探索操控联会的方法，以提高作物产量或开发遗传疾病的治疗方案。通过深入了解联会在分子水平上的运作方式，科学家可以设计策略以提高减数分裂的效率，并确保遗传信息的稳定性传递给未来的世代。总之，联会是一个基本的生物过程，具有深远的影响。它不仅对减数分裂的正常功能和遗传完整性的维护至关重要，还为理解遗传和进化的原则奠定了基础。随着我们继续揭示遗传学的复杂性，联会的研究无疑将保持一个关键的研究领域，提供可能导致医学、农业突破以及我们对生命本身的整体理解的见解。