additive variance

简明释义

加性方差

英英释义

例句

1.In genetic studies, researchers often analyze the additive variance 加性方差 to understand how different alleles contribute to traits.

在遗传研究中，研究人员通常分析加性方差 additive variance以了解不同等位基因如何影响性状。

2.In animal breeding, maximizing additive variance 加性方差 is essential for improving desirable traits in offspring.

在动物育种中，最大化加性方差 additive variance对改善后代的优良性状至关重要。

3.The study revealed that environmental factors can influence the additive variance 加性方差 of a population.

研究表明，环境因素可以影响一个种群的加性方差 additive variance。

4.The model demonstrated that the additive variance 加性方差 plays a crucial role in predicting phenotypic variation.

该模型表明，加性方差 additive variance在预测表型变异中起着关键作用。

5.By estimating the additive variance 加性方差, scientists can better assess the heritability of certain characteristics.

通过估计加性方差 additive variance，科学家可以更好地评估某些特征的遗传力。

作文

In the field of genetics and statistics, understanding the concept of additive variance is crucial for analyzing how traits are inherited. Additive variance refers to the portion of the total phenotypic variance that can be attributed to the additive effects of alleles. This means that the genetic contribution to a trait can be understood as the sum of the effects of individual alleles at different loci. For instance, when studying the height of individuals, researchers often find that certain alleles contribute positively or negatively to this trait. By summing these individual contributions, we can estimate the additive variance in height among a population.The importance of additive variance extends beyond genetics; it plays a significant role in breeding programs and evolutionary biology. In animal and plant breeding, breeders aim to select individuals that possess desirable traits. Understanding the additive variance associated with these traits allows breeders to make informed decisions about which individuals to select for reproduction. For example, if a particular breed of cattle shows high additive variance for milk production, selecting the best-performing individuals can lead to significant improvements in the overall yield of the herd over generations.Moreover, the concept of additive variance is essential for predicting the response to selection. The greater the additive variance, the more effective the selection process will be. This is because traits that have high additive variance are more likely to respond positively to selective breeding, leading to enhanced characteristics in future generations. Conversely, traits with low additive variance may not show much improvement, regardless of the selection pressure applied.In addition to its applications in breeding, additive variance also has implications in understanding complex traits. Many traits, such as intelligence or susceptibility to diseases, are influenced by multiple genes and environmental factors. By estimating the additive variance in these traits, researchers can better understand the genetic architecture underlying them. This understanding can lead to more effective strategies for managing health issues or enhancing cognitive abilities through targeted interventions.Furthermore, the study of additive variance is not limited to biological sciences. In fields like psychology and economics, researchers examine how various factors contribute to outcomes. For example, in psychology, the additive variance of personality traits can help in understanding how different genetic and environmental influences shape an individual's behavior. Similarly, in economics, the additive variance in income can shed light on the factors that contribute to wealth distribution within a population.In conclusion, the concept of additive variance is fundamental to various scientific disciplines. It provides insights into genetic inheritance, breeding practices, and the understanding of complex traits. By recognizing the significance of additive variance, researchers and practitioners can make informed decisions that enhance their fields of study. As we continue to explore the intricate relationships between genetics, environment, and behavior, the role of additive variance will undoubtedly remain a key area of focus, driving advancements in both science and practical applications.

在遗传学和统计学领域，理解加性方差的概念对于分析性状的遗传至关重要。加性方差指的是可以归因于等位基因的加性效应的总表型方差的一部分。这意味着，特征的遗传贡献可以被理解为不同基因座上各个等位基因效应的总和。例如，在研究个体身高时，研究人员常常发现某些等位基因对这一特征有正面或负面的贡献。通过将这些个体贡献相加，我们可以估计出一个人群中的身高的加性方差。加性方差的重要性不仅限于遗传学，它在育种计划和进化生物学中也发挥着重要作用。在动物和植物育种中，育种者旨在选择具有理想特征的个体。理解与这些特征相关的加性方差使得育种者能够对繁殖的个体做出明智的决策。例如，如果某一牛种在产奶量方面表现出高加性方差，选择表现最佳的个体可以在几代人中显著提高整个牛群的产奶量。此外，加性方差的概念对于预测选择的反应至关重要。加性方差越大，选择过程的有效性就越高。这是因为具有高加性方差的特征更可能对选择性育种产生积极的反应，从而在未来几代中增强特征。相反，具有低加性方差的特征无论施加何种选择压力，可能不会显示出太多的改善。除了在育种中的应用，加性方差在理解复杂特征方面也具有重要意义。许多特征，如智力或疾病易感性，都受到多种基因和环境因素的影响。通过估计这些特征的加性方差，研究人员可以更好地理解其背后的遗传结构。这种理解可以导致更有效的健康管理策略或通过针对性干预来增强认知能力。此外，对加性方差的研究并不限于生物科学。在心理学和经济学等领域，研究人员考察各种因素如何影响结果。例如，在心理学中，个性特征的加性方差可以帮助理解不同的遗传和环境影响如何塑造个体行为。同样，在经济学中，收入的加性方差可以揭示影响财富分配的因素。总之，加性方差的概念对于多个科学学科至关重要。它为遗传继承、育种实践和复杂特征的理解提供了深刻的见解。通过认识到加性方差的重要性，研究人员和从业者能够做出增强其研究领域的明智决策。随着我们继续探索遗传、环境和行为之间的复杂关系，加性方差的作用无疑将继续成为一个关键的关注领域，推动科学和实际应用的发展。