karyogamy

简明释义

英[ˌkærɪˈɒɡəmi]美[ˌkæriˈɑɡəmi]

n. 同性配子之互相融合

英英释义

单词用法

同义词

反义词

例句

1.Karyogamy the fusion of two nuclei that exist within a common cytoplasm, as occurs in the formation of the zygote from two gametes.

核配：同一个细胞中两个核之间的融合现象称为核配，核配发生在两个配子结合成合子的过程中。

2.Karyogamy the fusion of two nuclei that exist within a common cytoplasm, as occurs in the formation of the zygote from two gametes.

核配：同一个细胞中两个核之间的融合现象称为核配，核配发生在两个配子结合成合子的过程中。

3.We focused on several key events during fertilization from membrane fusion to karyogamy of sperm cells and egg cells.

探讨了从精细胞和卵细胞质膜融合到它们的核融合完成这一发育阶段的某些主要事件。

4.In the life cycle of fungi, karyogamy is a crucial step where two nuclei fuse together.

在真菌的生命周期中，核融合是两个细胞核结合在一起的关键步骤。

5.After karyogamy, the zygote undergoes meiosis to produce spores.

在核融合之后，合子进行减数分裂以产生孢子。

6.The process of karyogamy can be affected by environmental conditions.

环境条件可能会影响核融合的过程。

7.In sexual reproduction of plants, karyogamy occurs after fertilization.

在植物的有性繁殖中，核融合发生在受精之后。

8.Research on karyogamy mechanisms helps us understand genetic diversity in fungi.

对核融合机制的研究帮助我们理解真菌中的遗传多样性。

作文

In the study of biology, particularly in the field of genetics and cell reproduction, understanding various processes is crucial. One such process is karyogamy">karyogamy, which refers to the fusion of two nuclei during sexual reproduction in eukaryotic organisms. This event is a critical step in the life cycle of many organisms, including fungi, plants, and animals. It plays a significant role in ensuring genetic diversity and stability within a population. The term karyogamy">karyogamy derives from the Greek words 'karyon' meaning nucleus and 'gamos' meaning marriage. This nomenclature aptly describes the merging of genetic material from two parent cells. During this process, the haploid nuclei from each gamete combine to form a diploid nucleus, which contains genetic information from both parents. This fusion marks the transition from the gametic stage to the zygotic stage of development. In fungi, for instance, karyogamy">karyogamy occurs after plasmogamy, which is the fusion of the cytoplasm of two cells. This sequential process is vital for the formation of a zygospore, which can eventually develop into a new organism. The timing of karyogamy">karyogamy can vary significantly among species; in some, it occurs immediately after plasmogamy, while in others, there may be a prolonged dikaryotic phase where two distinct nuclei coexist before fusing. In plants, karyogamy">karyogamy takes place during fertilization when pollen grains (male gametes) reach the ovule (female gamete). The fusion of these nuclei results in a zygote, which will develop into a seed. This process not only ensures the continuation of plant species but also contributes to genetic variation, which is essential for adaptation and evolution. In animals, karyogamy">karyogamy is a fundamental part of sexual reproduction. When sperm fertilizes an egg, their nuclei unite, resulting in a zygote that will undergo multiple rounds of cell division and differentiation to form a complete organism. The significance of karyogamy">karyogamy in this context cannot be overstated, as it is the very foundation of genetic inheritance and diversity in sexually reproducing species. Furthermore, the study of karyogamy">karyogamy has implications beyond mere biological interest. Understanding how nuclei fuse can provide insights into various genetic disorders and reproductive issues in humans. For example, abnormalities in the fertilization process can lead to conditions such as infertility or developmental disorders. By studying karyogamy, researchers can develop better diagnostic tools and treatments for these issues. In conclusion, karyogamy">karyogamy is a fundamental biological process that signifies the union of genetic material from two parent cells. Its importance spans across various domains of life, from fungi to plants and animals, playing a crucial role in reproduction and genetic diversity. As we continue to explore the complexities of life at the cellular level, understanding processes like karyogamy">karyogamy will undoubtedly enhance our knowledge of biology and its applications in medicine and agriculture.

在生物学研究中，特别是在遗传学和细胞繁殖领域，理解各种过程至关重要。其中一个过程是karyogamy">karyogamy，指的是在真核生物的有性繁殖过程中两个细胞核的融合。这个事件是许多生物生命周期中的关键步骤，包括真菌、植物和动物。它在确保种群内的遗传多样性和稳定性方面发挥着重要作用。 术语karyogamy">karyogamy源自希腊词“karyon”，意为细胞核，以及“gamos”，意为婚配。这一命名恰如其分地描述了来自两个母细胞的遗传物质的合并。在这一过程中，每个配子的单倍体细胞核结合形成一个二倍体细胞核，其中包含来自两个父母的遗传信息。这种融合标志着从配子阶段到合子阶段的转变。 例如，在真菌中，karyogamy">karyogamy发生在质配之前，即两个细胞的细胞质融合。这个连续的过程对于形成合子孢子至关重要，合子孢子最终可以发育成一个新生物。karyogamy">karyogamy的时机在物种之间可能会有显著差异；在某些物种中，它发生在质配之后，而在其他物种中，可能会有一个延长的双核相位，在此期间两个不同的细胞核共存，然后再融合。 在植物中，karyogamy">karyogamy发生在授粉时，花粉粒（雄配子）到达胚珠（雌配子）。这些细胞核的融合导致合子的形成，合子将发育成种子。这个过程不仅确保植物物种的延续，而且还促进遗传变异，这对适应和进化至关重要。 在动物中，karyogamy">karyogamy是有性繁殖的基本部分。当精子使卵子受精时，它们的细胞核结合，形成一个合子，该合子将经历多轮细胞分裂和分化，形成一个完整的生物体。在这个背景下，karyogamy">karyogamy的重要性不言而喻，因为它是遗传继承和在有性繁殖物种中实现多样性的基础。 此外，karyogamy">karyogamy的研究不仅限于生物学兴趣。理解细胞核如何融合可以为各种遗传疾病和人类生殖问题提供见解。例如，受精过程中的异常可能导致不育或发育障碍等情况。通过研究karyogamy，研究人员可以开发更好的诊断工具和治疗方案。 总之，karyogamy">karyogamy是一个基本的生物过程，标志着来自两个母细胞的遗传物质的结合。它的重要性跨越了生命的各个领域，从真菌到植物和动物，在繁殖和遗传多样性中发挥着关键作用。随着我们继续探索细胞层面的生命复杂性，理解像karyogamy">karyogamy这样的过程无疑将增强我们对生物学及其在医学和农业应用中的知识。