phenotypic variance

简明释义

表型方差

英英释义

例句

1.Understanding the sources of phenotypic variance 表型变异 is crucial for improving crop yields.

理解表型变异的来源对提高作物产量至关重要。

2.In this experiment, we measured the phenotypic variance 表型变异 in response to temperature changes.

在这个实验中，我们测量了对温度变化的表型变异。

3.Researchers found that the phenotypic variance 表型变异 of fruit size was significantly affected by soil nutrients.

研究人员发现，土壤营养对果实大小的表型变异有显著影响。

4.The study aimed to quantify the phenotypic variance 表型变异 in plant height across different environmental conditions.

该研究旨在量化不同环境条件下植物高度的表型变异。

5.The phenotypic variance 表型变异 among the cattle breeds was analyzed to enhance breeding programs.

对不同牛种之间的表型变异进行分析，以增强育种计划。

作文

In the field of genetics and biology, understanding the concept of phenotypic variance is crucial for studying how traits are expressed in organisms. Phenotypic variance refers to the variability in phenotypes that exists within a population due to genetic and environmental factors. This variance is essential for evolutionary processes, as it provides the raw material upon which natural selection can act. Without phenotypic variance, populations would lack diversity, making them more susceptible to diseases and environmental changes.To illustrate this concept, consider a population of plants that exhibit a range of heights. Some plants may grow tall, while others remain short. This difference in height is a result of phenotypic variance, which can be attributed to various factors such as genetic differences among the plants and the environmental conditions in which they grow. For instance, plants receiving more sunlight may grow taller than those in shaded areas. Thus, both genetics and environment play a significant role in determining the observable characteristics of these plants.Moreover, phenotypic variance is not limited to physical traits. It also encompasses behavioral traits, physiological responses, and other characteristics. For example, in animal populations, some individuals may exhibit more aggressive behaviors while others are more docile. These differences can influence survival and reproduction, further contributing to the evolutionary dynamics of the species.The study of phenotypic variance can also have practical applications in agriculture and conservation. By understanding the sources of variation in crop plants, farmers can select for desirable traits, such as drought resistance or pest tolerance, leading to improved yields and sustainability. In conservation biology, recognizing phenotypic variance within endangered species can help in developing strategies to maintain genetic diversity, which is vital for the resilience of populations.In conclusion, phenotypic variance is a fundamental concept in biology that highlights the diversity of traits within a population. It is shaped by both genetic and environmental influences and plays a critical role in evolution, agriculture, and conservation efforts. By studying phenotypic variance, scientists can gain insights into the mechanisms of evolution and the importance of biodiversity in maintaining healthy ecosystems.

在遗传学和生物学领域，理解“表型变异”这一概念对于研究生物体特征的表现至关重要。“表型变异”指的是由于遗传和环境因素导致的种群中表型的变异性。这种变异对进化过程至关重要，因为它为自然选择提供了原材料。如果没有“表型变异”，种群将缺乏多样性，使其更容易受到疾病和环境变化的影响。为了说明这个概念，可以考虑一群植物的种群，它们表现出不同的高度。有些植物可能长得很高，而另一些则保持较矮。这种高度差异是“表型变异”的结果，可以归因于植物之间的遗传差异和它们生长的环境条件。例如，接受更多阳光的植物可能比那些处于阴影中的植物长得更高。因此，遗传和环境在决定这些植物的可观察特征方面发挥着重要作用。此外，“表型变异”不仅限于物理特征。它还包括行为特征、生理反应和其他特征。例如，在动物种群中，一些个体可能表现出更具攻击性的行为，而另一些则更温顺。这些差异可以影响生存和繁殖，进一步促进物种的进化动态。对“表型变异”的研究也可以在农业和保护方面具有实际应用。通过理解作物植物中变异的来源，农民可以选择具有良好特征的植物，例如抗旱或抗虫性，从而提高产量和可持续性。在保护生物学中，认识到濒危物种中的“表型变异”可以帮助制定维持遗传多样性的策略，这对种群的韧性至关重要。总之，“表型变异”是生物学中的一个基本概念，突显了种群内特征的多样性。它受到遗传和环境影响的塑造，并在进化、农业和保护工作中发挥着关键作用。通过研究“表型变异”，科学家可以深入了解进化机制以及生物多样性在维持健康生态系统中的重要性。