allelic substitution

简明释义

等位替换;

英英释义

例句

1.The paper discusses the role of allelic substitution 等位基因替代 in adaptive evolution.

这篇论文讨论了等位基因替代在适应性进化中的作用。

2.The gene mapping project aimed to identify regions affected by allelic substitution 等位基因替代 in human diseases.

该基因图谱项目旨在识别在人类疾病中受等位基因替代影响的区域。

3.Researchers found that allelic substitution 等位基因替代 can lead to significant phenotypic changes in plants.

研究人员发现，等位基因替代可以导致植物表型的显著变化。

4.In agriculture, allelic substitution 等位基因替代 is used to improve crop resistance to diseases.

在农业中，等位基因替代用于提高作物对疾病的抵抗力。

5.The study focused on the effects of allelic substitution 等位基因替代 in the population's genetic diversity.

这项研究集中在该人群遗传多样性中等位基因替代的影响。

作文

In the field of genetics, understanding the mechanisms that drive variation among organisms is crucial. One such mechanism is known as allelic substitution, which refers to the process where one allele in a gene is replaced by another allele. This phenomenon plays a significant role in evolution and can lead to the development of new traits within a population. Through allelic substitution, genetic diversity is enhanced, allowing species to adapt to changing environments and survive various challenges. The concept of allelic substitution can be illustrated by examining the case of the peppered moth during the Industrial Revolution in England. Initially, the majority of these moths had light-colored wings, which helped them blend into the lichen-covered trees they inhabited. However, as pollution darkened the trees, a mutation occurred that led to the emergence of a darker variant of the moth. The allele responsible for this darker coloration became more prevalent due to natural selection, demonstrating how allelic substitution can occur in response to environmental pressures.Another important aspect of allelic substitution is its implications for medicine and agriculture. In crops, for instance, breeding programs often utilize allelic substitution to introduce desirable traits such as disease resistance or increased yield. By replacing less favorable alleles with more advantageous ones, scientists can create varieties that are better suited for cultivation in specific climates or conditions. Similarly, in human medicine, understanding allelic substitution can help researchers identify genetic predispositions to certain diseases, allowing for more targeted treatments and preventive measures.Moreover, the study of allelic substitution is essential for conservation biology. As habitats change due to climate change and human activity, populations may experience shifts in allele frequencies. Conservationists can use knowledge of allelic substitution to develop strategies that promote genetic diversity, ensuring that endangered species have the resilience needed to adapt to their changing environments. In conclusion, allelic substitution is a fundamental concept in genetics that underpins much of the variation we observe in living organisms. Its role in evolution, agriculture, medicine, and conservation highlights its significance across multiple disciplines. By continuing to study and understand allelic substitution, we can gain insights into the processes that shape life on Earth and apply this knowledge to address real-world challenges. As we move forward, it is imperative that we embrace the complexities of genetics and the power of allelic substitution to foster a sustainable future for all species.

在遗传学领域，理解驱动生物体之间变异的机制至关重要。一个这样的机制被称为等位基因替代，指的是一个基因中的一个等位基因被另一个等位基因替换的过程。这种现象在进化中发挥着重要作用，并可能导致种群中新特征的发展。通过等位基因替代，遗传多样性得以增强，使物种能够适应不断变化的环境并生存于各种挑战之中。等位基因替代的概念可以通过考察工业革命期间英国的胡椒蛾案例来说明。最初，这些蛾子大多数具有浅色的翅膀，这帮助它们与栖息的苔藓覆盖的树木融为一体。然而，随着污染使树木变暗，一种突变出现，导致一种较暗变体的蛾子出现。负责这种较暗颜色的等位基因由于自然选择而变得更为普遍，展示了如何在环境压力下发生等位基因替代。等位基因替代的另一个重要方面是其对医学和农业的影响。例如，在作物中，育种计划通常利用等位基因替代引入如抗病性或增产等理想特征。通过用更有利的等位基因替换较不利的等位基因，科学家可以创造出更适合特定气候或条件下种植的品种。同样，在人类医学中，理解等位基因替代可以帮助研究人员识别某些疾病的遗传易感性，从而允许更有针对性的治疗和预防措施。此外，研究等位基因替代对保护生物学至关重要。随着栖息地因气候变化和人类活动而变化，种群可能会经历等位基因频率的变化。保护主义者可以利用等位基因替代的知识制定促进遗传多样性的策略，确保濒危物种具备适应其变化环境所需的韧性。总之，等位基因替代是遗传学中的一个基本概念，支撑着我们观察到的生物体变异的许多方面。它在进化、农业、医学和保护中的作用凸显了其在多个学科中的重要性。通过继续研究和理解等位基因替代，我们可以深入了解塑造地球生命的过程，并将这些知识应用于解决现实世界的挑战。随着我们向前发展，必须拥抱遗传学的复杂性和等位基因替代的力量，以促进所有物种的可持续未来。