anisolecithal egg

简明释义

端黄卵

英英释义

例句

1.The study of the development of the anisolecithal egg 不均卵黄卵 is crucial for understanding early embryogenesis.

研究 不均卵黄卵 的发育对于理解早期胚胎发育至关重要。

2.Understanding the characteristics of the anisolecithal egg 不均卵黄卵 helps in developmental biology research.

了解 不均卵黄卵 的特征有助于发展生物学研究。

3.Researchers observed that the anisolecithal egg 不均卵黄卵 has a relatively small amount of yolk compared to other types.

研究人员观察到，与其他类型相比，不均卵黄卵 的卵黄相对较少。

4.The fertilization process in an anisolecithal egg 不均卵黄卵 can vary significantly among different organisms.

在 不均卵黄卵 中的受精过程在不同生物之间可能有显著差异。

5.In certain species, the anisolecithal egg 不均卵黄卵 exhibits a unique pattern of cleavage.

在某些物种中，不均卵黄卵 显示出独特的裂变模式。

作文

In the study of embryology, understanding the different types of eggs is crucial for grasping how various organisms develop. One such type is the anisolecithal egg, which is characterized by a relatively uniform distribution of yolk throughout the egg. This term derives from the Greek words 'aniso,' meaning unequal, and 'lecithos,' meaning yolk. In essence, the anisolecithal egg refers to eggs that contain a moderate amount of yolk that does not concentrate at one end but is instead distributed more evenly. This type of egg is commonly found in certain species of animals, including some insects and amphibians.The significance of the anisolecithal egg lies in its developmental processes. Unlike other egg types, such as telolecithal eggs, which have a large yolk mass at one pole, the anisolecithal egg allows for a more uniform distribution of nutrients. This can lead to different patterns of cleavage during the early stages of embryonic development. In embryos that arise from anisolecithal eggs, the cells tend to divide more symmetrically, which can influence the overall morphology of the resulting organism.Additionally, the anisolecithal egg plays a vital role in the evolutionary adaptations of species. For instance, organisms that lay these eggs may be better suited to environments where resources are evenly distributed, allowing for more efficient use of the available yolk. The moderate yolk content also means that the developing embryo has a steady supply of nutrients without the risk of having too much yolk that could hinder its growth.In contrast, organisms with telolecithal or centrolecithal eggs may experience different challenges and advantages based on their yolk distribution. Telolecithal eggs, with their concentrated yolk, often result in a more polarized embryo, which can lead to asymmetrical development. On the other hand, centrolecithal eggs, which have yolk concentrated in the center, exhibit unique cleavage patterns that can affect the organism's eventual form.The study of the anisolecithal egg and its implications is not limited to academic biology; it also has practical applications in fields such as agriculture and conservation. For example, understanding the reproductive strategies of species that produce anisolecithal eggs can inform breeding programs aimed at preserving biodiversity. By recognizing how these eggs develop and what environmental factors influence their success, scientists can create better conditions for the survival of various species.In conclusion, the anisolecithal egg is a fascinating subject within the realm of embryology, offering insights into the complexities of life and development. Its unique characteristics allow for a more balanced nutrient distribution, influencing the embryonic cleavage patterns and ultimately shaping the organism's development. As we continue to explore the intricacies of biological processes, the anisolecithal egg serves as a reminder of the diversity and adaptability of life on Earth.

在胚胎学研究中，理解不同类型的卵子对于掌握各种生物的发育至关重要。其中一种类型是非偏心卵，其特征是卵子内蛋黄的分布相对均匀。这个术语源自希腊语单词'aniso'，意为不等，和'lecithos'，意为蛋黄。实质上，非偏心卵指的是那些含有适量蛋黄的卵子，这些蛋黄并没有集中在一端，而是更均匀地分布。这种类型的卵子常见于某些动物物种，包括一些昆虫和两栖动物。非偏心卵的意义在于其发育过程。与其他类型的卵子（如偏心卵，它们在一个极点有大量蛋黄）不同，非偏心卵允许营养物质更均匀地分布。这可能导致在胚胎早期阶段的不同分裂模式。在由非偏心卵产生的胚胎中，细胞往往更对称地分裂，这会影响最终生物体的整体形态。此外，非偏心卵在物种的进化适应中也发挥着重要作用。例如，产下这些卵子的生物可能更适合资源均匀分布的环境，从而更有效地利用可用的蛋黄。适中的蛋黄含量也意味着发育中的胚胎可以稳定地获得营养，而不会面临过多蛋黄可能阻碍其生长的风险。相比之下，具有偏心卵或中心卵的生物可能会面临基于其蛋黄分布的不同挑战和优势。偏心卵因其浓缩的蛋黄，通常会导致更极性化的胚胎，这可能导致不对称的发育。另一方面，中心卵则在中心浓缩蛋黄，表现出独特的分裂模式，这可能影响生物体的最终形态。对非偏心卵及其影响的研究不仅限于学术生物学；它在农业和保护等领域也具有实际应用。例如，了解产生非偏心卵的物种的繁殖策略可以为旨在保护生物多样性的育种项目提供信息。通过认识到这些卵子如何发育以及哪些环境因素影响它们的成功，科学家可以创造更有利于各种物种生存的条件。总之，非偏心卵是胚胎学领域内一个引人入胜的主题，提供了对生命和发育复杂性的深入见解。其独特特征使得营养物质分布更加平衡，影响胚胎的分裂模式，并最终塑造生物体的发育。随着我们继续探索生物过程的复杂性，非偏心卵提醒我们地球生命的多样性和适应性。