artificial selection

简明释义

人工选择

英英释义

例句

1.In agriculture, artificial selection helps in developing high-yield varieties of plants.

在农业中，人工选择有助于开发高产植物品种。

2.Through artificial selection, dog breeders create specific breeds with desired traits.

通过人工选择，犬类繁殖者创造出具有特定特征的品种。

3.The concept of artificial selection was first popularized by Charles Darwin in his studies.

查尔斯·达尔文在他的研究中首次普及了人工选择的概念。

4.Farmers often use artificial selection to breed crops that are more resistant to disease.

农民经常使用人工选择来培育对疾病更具抵抗力的作物。

5.The process of artificial selection has significantly changed the characteristics of many domesticated animals.

经过人工选择的过程，许多驯化动物的特征发生了显著变化。

作文

In the realm of biology, the concept of artificial selection plays a crucial role in understanding how humans have influenced the evolution of various species. Artificial selection refers to the intentional breeding of organisms with desirable traits to produce offspring that exhibit those same traits. This process has been employed for thousands of years, primarily in agriculture and animal husbandry, to enhance specific characteristics such as size, flavor, or resistance to disease.The history of artificial selection can be traced back to ancient civilizations. For example, early farmers recognized that certain plants yielded more food than others. By saving seeds from the best crops and replanting them, they gradually improved the quality and quantity of their harvests. Similarly, domesticated animals were selectively bred for traits that made them more useful to humans, such as larger size for meat production or gentler temperaments for companionship.One of the most famous examples of artificial selection is the domestication of dogs. Over thousands of years, humans have bred dogs for specific traits, resulting in the vast array of breeds we see today. From tiny Chihuahuas to large Great Danes, each breed has been developed through artificial selection to fulfill different roles, whether as companions, working animals, or show dogs.However, while artificial selection has led to many beneficial outcomes, it also raises ethical questions and concerns about biodiversity. The focus on specific traits can lead to a reduction in genetic variation within a species, making them more susceptible to diseases and environmental changes. For instance, many modern crops are bred for high yield but lack the genetic diversity that would allow them to adapt to changing climates or resist pests. This monoculture can have devastating effects on food security.Moreover, artificial selection can sometimes result in unintended consequences. For example, breeding animals for specific physical traits can lead to health problems. Certain dog breeds are prone to genetic disorders due to the limited gene pool from which they were selected. This highlights the importance of considering the long-term effects of artificial selection on the health and well-being of both plants and animals.In conclusion, artificial selection is a powerful tool that has shaped the world around us. It has allowed humans to cultivate plants and breed animals that meet our needs and desires. However, it is essential to approach this practice with caution, balancing the benefits of enhanced traits with the potential risks to biodiversity and health. As we move forward, understanding the implications of artificial selection will be crucial in ensuring a sustainable future for both agriculture and conservation efforts. By fostering genetic diversity and being mindful of the ethical considerations, we can harness the power of artificial selection responsibly, benefiting both humanity and the natural world.

在生物学领域，人工选择的概念在理解人类如何影响各种物种的进化方面发挥着至关重要的作用。人工选择是指有意地繁殖具有理想特征的生物，以产生表现出相同特征的后代。这一过程已经被采用了数千年，主要用于农业和畜牧业，以增强特定特征，如大小、风味或抗病能力。人工选择的历史可以追溯到古代文明。例如，早期的农民意识到某些植物比其他植物产量更高。通过保存最佳作物的种子并重新种植，他们逐渐改善了收成的质量和数量。同样，家畜也因其对人类更有用的特征而被选择性繁殖，例如为了肉类生产而培育更大的体型，或者为了伴侣而培育性情温和的动物。其中一个最著名的例子就是狗的驯化。在数千年的时间里，人类为特定的特征繁殖狗，导致今天我们看到的各种犬种。从微小的吉娃娃到大型的大丹犬，每个品种都是通过人工选择发展而来的，以满足不同的角色，无论是作为伴侣、工作动物还是展览犬。然而，虽然人工选择带来了许多好处，但它也引发了关于生物多样性的伦理问题和担忧。对特定特征的关注可能导致物种内遗传变异的减少，使它们更容易受到疾病和环境变化的影响。例如，许多现代作物因高产而被培育，但缺乏足以适应气候变化或抵抗害虫的遗传多样性。这种单一栽培可能对粮食安全产生毁灭性的影响。此外，人工选择有时会导致意想不到的后果。例如，为特定的身体特征繁殖动物可能导致健康问题。某些犬种因选择的基因库有限而容易患遗传疾病。这突显了考虑人工选择对植物和动物健康与福祉的长期影响的重要性。总之，人工选择是一种强大的工具，塑造了我们周围的世界。它使人类能够培养植物和繁殖动物，以满足我们的需求和愿望。然而，必须谨慎对待这一实践，在增强特征的好处与对生物多样性和健康潜在风险之间取得平衡。随着我们向前发展，理解人工选择的影响将对确保农业和保护工作可持续的未来至关重要。通过促进遗传多样性并关注伦理考虑，我们可以负责任地利用人工选择的力量，使人类和自然界都受益。