recombination coefficient

简明释义

复合系数

英英释义

例句

1.A high recombination coefficient 重组系数 indicates greater genetic variability among offspring.

高重组系数 recombination coefficient表示后代之间更大的遗传变异性。

2.The recombination coefficient 重组系数 can vary significantly between different species.

不同物种之间的重组系数 recombination coefficient可能会有显著差异。

3.Researchers often analyze the recombination coefficient 重组系数 to map genes on chromosomes.

研究人员通常分析重组系数 recombination coefficient以在染色体上绘制基因图。

4.In plant breeding, the recombination coefficient 重组系数 is used to assess the genetic diversity of hybrids.

在植物育种中，重组系数 recombination coefficient用于评估杂交种的遗传多样性。

5.The geneticist calculated the recombination coefficient 重组系数 to determine the likelihood of allele combinations in a population.

遗传学家计算了重组系数 recombination coefficient以确定一个种群中等位基因组合的可能性。

作文

The concept of the recombination coefficient is pivotal in the fields of genetics and evolutionary biology. It refers to the probability that two alleles at different loci on a chromosome will be separated during meiosis, which is the process of cell division that produces gametes. Understanding the recombination coefficient is essential for researchers who are studying genetic variation and inheritance patterns within populations.To grasp the significance of the recombination coefficient, one must first understand the basics of genetics. Genes are segments of DNA that encode for proteins, which ultimately determine the traits of an organism. Alleles are different versions of a gene that can exist at a given locus. During sexual reproduction, offspring inherit one allele from each parent, resulting in a combination of traits.The recombination coefficient plays a crucial role in this inheritance process. When gametes are formed, chromosomes undergo a process called crossing over, where homologous chromosomes exchange segments of DNA. This leads to the creation of new allele combinations in the offspring. The recombination coefficient quantifies the likelihood of this crossing over event occurring between two genes. A higher recombination coefficient indicates a greater chance that the alleles will be separated, leading to more genetic diversity.In practical terms, the recombination coefficient can be calculated using genetic mapping techniques. By analyzing the frequency of recombination events between different genetic markers, scientists can estimate the distance between those markers on a chromosome. This information is invaluable for constructing genetic maps, which are essential tools for breeding programs and for studying the genetic basis of diseases.Moreover, the recombination coefficient has implications beyond basic research. In agriculture, for example, understanding the recombination coefficient can help breeders develop new crop varieties that are more resilient to pests and environmental stresses. By selecting for favorable traits and utilizing knowledge of the recombination coefficient, breeders can enhance the genetic quality of crops, leading to improved yields and food security.In conclusion, the recombination coefficient is a fundamental concept in genetics that provides insights into the mechanisms of inheritance and genetic diversity. It not only aids in the understanding of evolutionary processes but also has practical applications in agriculture and medicine. As research continues to advance, the importance of the recombination coefficient will undoubtedly grow, highlighting its relevance in both scientific inquiry and real-world applications.

重组系数的概念在遗传学和进化生物学领域至关重要。它指的是在减数分裂过程中，两个位点上的等位基因被分离的概率，减数分裂是产生配子的细胞分裂过程。理解重组系数对于研究遗传变异和种群内遗传模式的研究人员来说是必不可少的。要掌握重组系数的重要性，首先必须了解遗传学的基础知识。基因是编码蛋白质的DNA片段，最终决定了生物体的特征。等位基因是可以在给定位点上存在的基因的不同版本。在有性繁殖过程中，后代从每个父母那里继承一个等位基因，从而形成特征的组合。重组系数在这种遗传过程中发挥着关键作用。当形成配子时，染色体经历一个称为交叉的过程，同源染色体交换DNA片段。这导致后代中生成新的等位基因组合。重组系数量化了两个基因之间发生这一交叉事件的可能性。较高的重组系数表明等位基因被分离的可能性更大，从而导致更多的遗传多样性。在实际操作中，可以使用遗传图谱技术计算重组系数。通过分析不同遗传标记之间重组事件的频率，科学家可以估计这些标记在染色体上的距离。这些信息对于构建遗传图谱非常宝贵，遗传图谱是育种计划和研究疾病遗传基础的重要工具。此外，重组系数在基础研究之外还有更深远的影响。例如，在农业中，了解重组系数可以帮助育种者开发出对害虫和环境压力更具抵抗力的新作物品种。通过选择有利特征并利用对重组系数的理解，育种者可以提高作物的遗传质量，从而提高产量和粮食安全。总之，重组系数是遗传学中的一个基本概念，为理解遗传和遗传多样性的机制提供了见解。它不仅有助于理解进化过程，还有在农业和医学中的实际应用。随着研究的不断推进，重组系数的重要性无疑将会增加，突显其在科学探究和现实世界应用中的相关性。