double strand

简明释义

双股

英英释义

例句

1.During DNA replication, the double strand 双链 unwinds to allow copying of genetic material.

在DNA复制过程中，double strand 双链解开以允许遗传物质的复制。

2.Scientists use techniques like PCR to amplify double strand 双链 DNA for analysis.

科学家使用PCR等技术来扩增double strand 双链DNA以进行分析。

3.The DNA molecule is composed of a double strand 双链 that carries genetic information.

DNA分子由一个double strand 双链组成，携带遗传信息。

4.The double strand 双链 of RNA can also play a crucial role in various biological processes.

RNA的double strand 双链在各种生物过程中也起着关键作用。

5.In molecular biology, researchers often study the effects of mutations on the double strand 双链 structure of DNA.

在分子生物学中，研究人员常常研究突变对DNA的double strand 双链结构的影响。

作文

In the world of molecular biology, the term double strand refers to the structure of DNA, which consists of two long chains of nucleotides twisted around each other in a double helix formation. This unique configuration is crucial for the stability and replication of genetic material. Each strand of the DNA molecule comprises a sequence of nucleotides, which are the building blocks of DNA. The double strand structure ensures that the genetic information is preserved and accurately copied during cell division.The significance of the double strand cannot be overstated. It allows for the complementary base pairing between the strands, where adenine pairs with thymine and cytosine pairs with guanine. This pairing is essential for the accurate replication of DNA, as it creates a template for synthesizing new strands. When cells divide, the double strand unwinds, and each original strand serves as a template for a new complementary strand, ensuring that genetic information is passed on correctly to the next generation of cells.Moreover, the double strand structure plays a vital role in the regulation of gene expression. Proteins known as transcription factors bind to specific regions of the DNA, influencing whether certain genes are turned on or off. The accessibility of the double strand can change depending on the cellular environment, allowing for dynamic regulation of gene activity. This adaptability is crucial for responding to environmental changes and maintaining homeostasis within an organism.In addition to its biological importance, the concept of double strand extends beyond DNA itself. For example, in the field of biochemistry, scientists study various types of double strand molecules, including RNA. While most RNA exists as a single strand, certain types, such as double-stranded RNA (dsRNA), play critical roles in cellular processes, including the immune response and gene regulation. Understanding the function of double strand RNA has implications for developing therapeutic strategies against viral infections and genetic disorders.The exploration of double strand structures has also led to advancements in biotechnology and genetic engineering. Techniques such as CRISPR-Cas9 rely on the ability to manipulate double strand DNA to edit genes with precision. This revolutionary technology has opened new avenues for treating genetic diseases, improving crops, and even combating climate change through bioengineering.In summary, the term double strand encapsulates a fundamental aspect of molecular biology that is integral to life itself. From the replication of genetic material to the regulation of gene expression and the development of cutting-edge biotechnologies, the double strand structure is pivotal in understanding the complexities of life at the molecular level. As research continues to uncover the mysteries of DNA and RNA, the importance of the double strand will undoubtedly remain a focal point in the scientific community, driving innovations that can transform our understanding of biology and medicine.

在分子生物学的世界中，术语双链指的是DNA的结构，它由两条长链核苷酸相互缠绕形成双螺旋结构。这种独特的配置对于遗传物质的稳定性和复制至关重要。DNA分子的每条链都由一系列核苷酸组成，这些核苷酸是DNA的基本构件。双链结构确保了遗传信息的保存和在细胞分裂过程中的准确复制。双链的重要性不容小觑。它允许链之间的互补碱基配对，其中腺嘌呤与胸腺嘧啶配对，胞嘧啶与鸟嘌呤配对。这种配对对于DNA的准确复制至关重要，因为它为合成新链创建了模板。当细胞分裂时，双链会解开，每条原始链作为新互补链的模板，确保遗传信息正确传递给下一代细胞。此外，双链结构在基因表达调控中也发挥着重要作用。被称为转录因子的蛋白质结合到DNA的特定区域，影响某些基因的开启或关闭。根据细胞环境的不同，双链的可及性可能会发生变化，从而允许基因活动的动态调节。这种适应性对于响应环境变化和维持生物体内的稳态至关重要。除了其生物学重要性之外，双链的概念超越了DNA本身。例如，在生物化学领域，科学家研究各种类型的双链分子，包括RNA。虽然大多数RNA以单链形式存在，但某些类型，如双链RNA（dsRNA），在细胞过程中发挥着关键作用，包括免疫反应和基因调控。理解双链RNA的功能对开发针对病毒感染和遗传疾病的治疗策略具有重要意义。对双链结构的探索还推动了生物技术和基因工程的进步。诸如CRISPR-Cas9等技术依赖于操纵双链DNA以精确编辑基因。这项革命性技术为治疗遗传疾病、改善农作物甚至通过生物工程对抗气候变化开辟了新的途径。总之，术语双链概括了分子生物学的一个基本方面，它对生命本身至关重要。从遗传物质的复制到基因表达的调控，再到尖端生物技术的发展，双链结构在理解生命复杂性方面至关重要。随着研究不断揭示DNA和RNA的奥秘，双链的重要性无疑将继续成为科学界的焦点，推动能够改变我们对生物学和医学理解的创新。