tetrads

简明释义

英[ˈtetrædz]美[ˈtetrædz]

n. [微]四联球菌；四色相配色（tetrad 的复数）

英英释义

单词用法

同义词

反义词

例句

1.An extine with its specific pattern had already been formed, when microspores were released from tetrads.

当小孢子从四分体中释放出来，特殊类型的外壁已经形成。

2.The results showed that the type of microsporic tetrads of the simple flower is belong to tetrahedral type and the mature pollen is two-celled with bristles on the surface.

单瓣紫花木槿的小孢子母细胞经过减数分裂形成四面体状的四分体，成熟花粉是二细胞型花粉，圆球型，表面有刺毛。

3.The results showed that the type of microsporic tetrads of the simple flower is belong to tetrahedral type and the mature pollen is two-celled with bristles on the surface.

单瓣紫花木槿的小孢子母细胞经过减数分裂形成四面体状的四分体，成熟花粉是二细胞型花粉，圆球型，表面有刺毛。

4.During the lab experiment, we observed how tetrads separate during cell division.

在实验室实验中，我们观察到四分体在细胞分裂过程中如何分离。

5.In biology class, we learned that during meiosis, chromosomes form pairs called tetrads.

在生物课上，我们了解到在减数分裂期间，染色体形成称为四分体的对。

6.The study of tetrads is crucial for understanding genetic recombination.

研究四分体对于理解基因重组至关重要。

7.The genetic diversity in offspring is increased when tetrads exchange genetic material.

当四分体交换遗传物质时，后代的遗传多样性增加。

8.In a typical plant life cycle, tetrads can be seen during pollen formation.

在典型的植物生命周期中，花粉形成期间可以看到四分体。

作文

In the study of genetics, the term tetrads refers to a group of four chromatids formed during meiosis. This process is crucial for sexual reproduction, as it ensures genetic diversity among offspring. During meiosis, homologous chromosomes pair up and exchange genetic material through a process called crossing over. This pairing results in the formation of tetrads, which consist of two homologous chromosomes, each made up of two sister chromatids. The significance of tetrads lies in their role in facilitating genetic variation. When these tetrads align during metaphase I of meiosis, they can undergo recombination. This means that segments of DNA can be swapped between the chromatids, leading to new combinations of alleles. As a result, the gametes produced at the end of meiosis are genetically unique, which is essential for evolution and adaptation in changing environments.Understanding tetrads is not only important for biologists but also for anyone interested in the principles of heredity. For instance, when studying traits in organisms, we often observe how certain characteristics are passed down from parents to offspring. The variation seen in these traits can often be traced back to the processes involving tetrads. In agriculture, this knowledge has been harnessed to breed plants and animals with desirable traits, enhancing food production and sustainability.Moreover, the concept of tetrads extends beyond biology into the realm of education. In teaching, the idea of grouping information into sets of four can help students better retain and understand complex concepts. Just as tetrads in genetics allow for the combination of different genetic traits, educators can use the principle of tetrads to create learning modules that encourage students to make connections between ideas, fostering a deeper understanding.In conclusion, the term tetrads encapsulates a fundamental aspect of genetic science that has far-reaching implications. From its role in promoting genetic diversity to its applications in breeding and education, understanding tetrads helps us appreciate the intricate mechanisms that govern life. As we continue to explore the complexities of genetics, the importance of tetrads will undoubtedly remain a central theme in our quest for knowledge about heredity and evolution.

在遗传学研究中，术语四分体指的是在减数分裂过程中形成的四条染色单体的组合。这个过程对于有性生殖至关重要，因为它确保了后代之间的遗传多样性。在减数分裂期间，同源染色体配对并通过称为交叉互换的过程交换遗传物质。这种配对导致了四分体的形成，其中包含两个同源染色体，每个染色体由两条姐妹染色单体组成。四分体的重要性在于其促进遗传变异的作用。当这些四分体在减数分裂的第一阶段中对齐时，它们可以经历重组。这意味着DNA片段可以在染色单体之间进行交换，导致等位基因的新组合。因此，在减数分裂结束时产生的配子在遗传上是独特的，这对于进化和适应不断变化的环境至关重要。理解四分体不仅对生物学家重要，也对任何对遗传原理感兴趣的人有帮助。例如，在研究生物体的特征时，我们经常观察到某些特性是如何从父母传递给后代的。这些特征中所见的变异通常可以追溯到涉及四分体的过程。在农业中，这一知识被用来培育具有理想特征的植物和动物，从而增强食品生产和可持续性。此外，四分体的概念超越了生物学，进入教育领域。在教学中，将信息分组为四个一组的理念可以帮助学生更好地保留和理解复杂概念。正如遗传学中的四分体允许不同遗传特征的组合，教育者可以利用四分体的原则创建学习模块，鼓励学生在思想之间建立联系，从而促进更深刻的理解。总之，术语四分体概括了遗传科学的一个基本方面，其影响深远。从促进遗传多样性的作用到在育种和教育中的应用，理解四分体帮助我们欣赏支配生命的复杂机制。随着我们继续探索遗传学的复杂性，四分体的重要性无疑将继续成为我们对遗传和进化知识追求的中心主题。