recombination coefficient

简明释义

复合系数

英英释义

例句

1.In breeding programs, the recombination coefficient helps in selecting parent plants that will produce the most diverse progeny.

在育种计划中，重组系数有助于选择能产生最多样化后代的亲本植物。

2.A higher recombination coefficient typically indicates a greater likelihood of genetic variation among offspring.

较高的重组系数通常表明后代中遗传变异的可能性更大。

3.The study focused on the recombination coefficient between two closely related species of fruit flies.

该研究集中于两种密切相关的果蝇物种之间的重组系数。

4.The recombination coefficient is a crucial parameter in population genetics, as it influences the genetic diversity of a population.

在种群遗传学中，重组系数是一个关键参数，因为它影响种群的遗传多样性。

5.Researchers calculated the recombination coefficient to understand the inheritance patterns of specific traits in plants.

研究人员计算了重组系数以了解植物中特定性状的遗传模式。

作文

In the field of genetics, understanding the mechanisms of inheritance is crucial for both basic research and practical applications. One of the key concepts that scientists often discuss is the recombination coefficient, which plays a significant role in genetic mapping and the study of evolutionary biology. The recombination coefficient is a measure of the likelihood that two alleles will be separated during meiosis due to recombination events. This coefficient provides insights into how genes are inherited and how traits are passed from one generation to the next.To grasp the importance of the recombination coefficient, we must first understand what recombination is. Recombination occurs during the formation of gametes, where homologous chromosomes exchange segments of genetic material. This process increases genetic diversity within a population, allowing for more variation in traits and enhancing the potential for adaptation to changing environments. The recombination coefficient quantifies this process by indicating the frequency at which recombination occurs between two loci on a chromosome.For instance, if two genes are located close to each other on the same chromosome, they are less likely to be separated during recombination, resulting in a low recombination coefficient. Conversely, if the genes are far apart, the recombination coefficient will be higher, indicating a greater chance of recombination separating them. This concept is essential for constructing genetic maps, which are used to locate genes associated with specific traits or diseases.Moreover, the recombination coefficient is not only relevant for understanding inheritance patterns but also has implications for evolutionary biology. By studying the recombination coefficient across different populations, researchers can infer the historical relationships between species and understand how certain traits have evolved over time. For example, a high recombination coefficient in a particular gene region may suggest that this area has been under strong selective pressure, leading to rapid evolution of associated traits.In agricultural science, the recombination coefficient is utilized in breeding programs to develop new crop varieties. By selecting parent plants with desirable traits and analyzing the recombination coefficient of their offspring, breeders can predict which combinations of genes will yield the best results. This application of the recombination coefficient not only aids in producing crops that are more resilient to pests and diseases but also contributes to food security by improving yield and quality.In conclusion, the recombination coefficient is a fundamental concept in genetics that serves as a vital tool for researchers and practitioners alike. Its ability to quantify the likelihood of recombination between alleles makes it indispensable for genetic mapping, evolutionary studies, and agricultural advancements. As our understanding of genetics continues to evolve, the significance of the recombination coefficient will undoubtedly remain central to many scientific inquiries and innovations in the future.

在遗传学领域，理解遗传机制对基础研究和实际应用至关重要。科学家们经常讨论的关键概念之一是重组系数，它在遗传图谱和进化生物学研究中起着重要作用。重组系数是一个衡量两个等位基因在减数分裂过程中因重组事件而被分开的可能性。这个系数提供了关于基因如何遗传以及特征如何从一代传递到下一代的见解。要理解重组系数的重要性，我们必须首先了解重组是什么。重组发生在配子的形成过程中，同源染色体交换遗传物质的片段。这个过程增加了种群内的遗传多样性，从而允许特征的更多变异，并增强适应环境变化的潜力。重组系数通过指示两个染色体位点之间重组发生的频率来量化这个过程。例如，如果两个基因位于同一条染色体上的相近位置，它们在重组过程中不太可能被分开，从而导致较低的重组系数。相反，如果基因相距较远，重组系数将更高，表明重组分离它们的可能性更大。这个概念对于构建遗传图谱至关重要，这些图谱用于定位与特定特征或疾病相关的基因。此外，重组系数不仅与理解遗传模式相关，而且对进化生物学也有影响。通过研究不同种群的重组系数，研究人员可以推断物种之间的历史关系，并理解某些特征是如何随着时间演变的。例如，在特定基因区域中较高的重组系数可能表明该区域受到强选择压力，从而导致相关特征的快速进化。在农业科学中，重组系数被应用于育种项目，以开发新的作物品种。通过选择具有理想特征的亲本植物并分析其后代的重组系数，育种者可以预测哪些基因组合会产生最佳结果。重组系数的这一应用不仅有助于生产更能抵御害虫和疾病的作物，还通过提高产量和质量为粮食安全做出贡献。总之，重组系数是遗传学中的一个基本概念，是研究人员和从业者的重要工具。它能够量化等位基因之间重组的可能性，使其在遗传图谱、进化研究和农业进步中不可或缺。随着我们对遗传学理解的不断发展，重组系数的重要性无疑将在未来的许多科学研究和创新中保持核心地位。