deoxyribonucleic acid

简明释义

脱氧核糖核酸

英英释义

例句

1.Scientists are studying the structure of deoxyribonucleic acid to understand genetic mutations.

科学家们正在研究脱氧核糖核酸的结构，以了解基因突变。

2.Forensic experts use deoxyribonucleic acid analysis to solve crimes.

法医专家使用脱氧核糖核酸分析来破案。

3.Every living organism has deoxyribonucleic acid that defines its characteristics.

每个生物都有脱氧核糖核酸，它定义了其特征。

4.The deoxyribonucleic acid in our cells carries the instructions for life.

我们细胞中的脱氧核糖核酸携带着生命的指令。

5.Genetic engineering involves manipulating deoxyribonucleic acid to create new traits.

基因工程涉及操纵脱氧核糖核酸以创造新特征。

作文

Deoxyribonucleic acid, commonly known as DNA, is the hereditary material in all living organisms. It carries the genetic instructions used in growth, development, functioning, and reproduction. The structure of deoxyribonucleic acid is often described as a double helix, which resembles a twisted ladder. This unique formation allows for the efficient storage and transmission of genetic information. Each rung of the ladder is made up of pairs of nitrogenous bases, which are essential for encoding the genetic instructions. The four types of bases found in deoxyribonucleic acid are adenine (A), thymine (T), cytosine (C), and guanine (G). The specific pairing of these bases—adenine with thymine and cytosine with guanine—ensures the accurate replication of deoxyribonucleic acid during cell division.Understanding deoxyribonucleic acid is crucial not only for biology but also for various fields such as medicine, genetics, and biotechnology. For instance, advancements in genetic engineering have allowed scientists to manipulate deoxyribonucleic acid to develop new treatments for diseases, improve agricultural practices, and even create genetically modified organisms (GMOs). These applications demonstrate the profound impact that deoxyribonucleic acid has on our lives and the environment.In medicine, the study of deoxyribonucleic acid has led to significant breakthroughs in understanding genetic disorders. By analyzing an individual’s deoxyribonucleic acid, researchers can identify mutations that may lead to diseases such as cystic fibrosis, sickle cell anemia, and various forms of cancer. This knowledge not only aids in diagnosis but also opens up possibilities for personalized medicine, where treatments can be tailored to an individual's genetic makeup.Moreover, forensic science heavily relies on deoxyribonucleic acid analysis for criminal investigations. DNA profiling can help identify suspects or victims based on biological samples collected from crime scenes. This application underscores the importance of deoxyribonucleic acid in the justice system and its role in solving crimes.In addition to its applications in health and law enforcement, deoxyribonucleic acid plays a vital role in evolutionary biology. By comparing the deoxyribonucleic acid sequences of different species, scientists can trace evolutionary relationships and understand how species have adapted over time. This research not only enhances our knowledge of biodiversity but also informs conservation efforts aimed at protecting endangered species.In conclusion, deoxyribonucleic acid is more than just a molecule; it is the blueprint of life. Its discovery has revolutionized our understanding of biology and opened up new avenues in medical research, forensic science, and evolutionary studies. As we continue to explore the complexities of deoxyribonucleic acid, we unlock the secrets of life itself, paving the way for innovations that can benefit humanity in countless ways. Therefore, grasping the concept of deoxyribonucleic acid is essential for anyone interested in the sciences, as it lays the foundation for many modern scientific advancements.

脱氧核糖核酸，通常称为DNA，是所有生物体的遗传物质。它携带用于生长、发育、功能和繁殖的遗传指令。脱氧核糖核酸的结构通常被描述为双螺旋，类似于一把扭曲的梯子。这种独特的形状允许高效地存储和传递遗传信息。梯子的每一个横档由一对氮碱基组成，这些碱基对于编码遗传指令至关重要。脱氧核糖核酸中发现的四种碱基是腺嘌呤（A）、胸腺嘧啶（T）、胞嘧啶（C）和鸟嘌呤（G）。这些碱基的特定配对——腺嘌呤与胸腺嘧啶配对，胞嘧啶与鸟嘌呤配对——确保了在细胞分裂过程中脱氧核糖核酸的准确复制。理解脱氧核糖核酸不仅对生物学至关重要，而且对医学、遗传学和生物技术等多个领域也至关重要。例如，基因工程的进步使科学家能够操纵脱氧核糖核酸，开发新的疾病治疗方法，改善农业实践，甚至创造转基因生物（GMO）。这些应用展示了脱氧核糖核酸对我们生活和环境的深远影响。在医学领域，对脱氧核糖核酸的研究已导致对遗传疾病理解的重大突破。通过分析个体的脱氧核糖核酸，研究人员可以识别可能导致囊性纤维化、镰状细胞贫血和各种癌症等疾病的突变。这一知识不仅有助于诊断，还开辟了个性化医学的可能性，即治疗可以根据个人的遗传构成量身定制。此外，法医科学在刑事调查中严重依赖于脱氧核糖核酸分析。DNA剖析可以帮助根据从犯罪现场收集的生物样本识别嫌疑人或受害者。这一应用强调了脱氧核糖核酸在司法系统中的重要性及其在破案中的作用。除了在健康和执法中的应用外，脱氧核糖核酸在进化生物学中也发挥着重要作用。通过比较不同物种的脱氧核糖核酸序列，科学家可以追踪进化关系，了解物种如何随时间适应。这项研究不仅增强了我们对生物多样性的认识，还为旨在保护濒危物种的保护工作提供了信息。总之，脱氧核糖核酸不仅仅是一种分子；它是生命的蓝图。它的发现彻底改变了我们对生物学的理解，并为医学研究、法医科学和进化研究开辟了新的途径。随着我们继续探索脱氧核糖核酸的复杂性，我们解锁了生命本身的秘密，为无数方式造福人类的创新铺平了道路。因此，掌握脱氧核糖核酸的概念对于任何对科学感兴趣的人来说都是必不可少的，因为它为许多现代科学进步奠定了基础。