parthenogenesis

简明释义

英[ˌpɑːθənəʊˈdʒenɪsɪs]美[ˌpɑːrθənoʊˈdʒenɪsɪs]

n. [植] 单性生殖，[胚] 孤雌生殖

英英释义

单词用法

同义词

反义词

例句

1.Individual species has a certain ability to parthenogenesis.

个别品种具有一定的孤雌生殖的能力。

2.The parthenogenesis efficiencies of bovine, ovine in vitro maturation(IVM) oocytes were also studied between ionomycin, electric activation and replaced medium.

这也说明了更换培养基不利于其体外囊胚发育率。

3.In this paper, the progresses of research on the natural and artificial parthenogenesis, ameiotic and meiotic parthenogenesis of the silkworm(Bombyx mori) were described in brief.

本文对桑蚕的自然单性生殖、人工单性生殖、减数分裂和非减数分裂的单性生殖发育等研究进展进行了简要地阐述；

4.In this paper, those factors were summed up to supply a reference to parthenogenesis embryo incubation in vitro.

旨在为研究体外孤雌胚发育和孤雌胚胎的培养提供参考。

5.The inheritance specific property of chemically induced parthenogenesis, and the value and prospects of parthenogenesis in maize breeding were also discussed in the later paper.

最后还对化学诱导玉米孤雌生殖发生的遗传特性生殖在玉米育种上的应用前景进行了讨论。

6.Parthenogenesis is so far known to occur in about 70 reptile species.

迄今已知大约70种爬行动物有单性繁殖行为。

7.Some species of lizards can reproduce through parthenogenesis, which allows them to give birth without mating.

一些蜥蜴种类可以通过孤雌生殖繁殖，这使得它们能够在不交配的情况下生育。

8.In certain plants, parthenogenesis can lead to the development of seeds without fertilization.

在某些植物中，孤雌生殖可以导致种子在没有受精的情况下发育。

9.The phenomenon of parthenogenesis is often observed in some insects, such as bees and ants.

在一些昆虫中，如蜜蜂和蚂蚁，常常观察到孤雌生殖现象。

10.Researchers are studying parthenogenesis in sharks to understand their unique reproductive strategies.

研究人员正在研究鲨鱼中的孤雌生殖，以了解它们独特的繁殖策略。

11.Some amphibians exhibit parthenogenesis, allowing them to thrive in isolated environments.

一些两栖动物表现出孤雌生殖，使它们能够在孤立的环境中生存。

作文

Parthenogenesis is a fascinating biological phenomenon that occurs in certain species, allowing them to reproduce without the need for fertilization by a male. This form of asexual reproduction has been observed in various organisms, including some insects, reptiles, and even plants. The term itself comes from the Greek words 'parthenos,' meaning virgin, and 'genes,' meaning born of or produced by. In essence, parthenogenesis (孤雌生殖) enables an organism to produce offspring from an unfertilized egg, leading to a unique mode of reproduction that raises many questions about evolution and adaptation.One of the most well-known examples of parthenogenesis (孤雌生殖) can be found in certain species of bees, specifically the drone bees. Drones are male bees that develop from unfertilized eggs through parthenogenesis (孤雌生殖). This means that female worker bees can produce drones without mating with a male. This reproductive strategy allows the hive to maintain its population even in the absence of males, which can be beneficial in environments where mates are scarce.Another interesting case is seen in some reptiles, such as the Komodo dragon. Female Komodo dragons have been known to reproduce through parthenogenesis (孤雌生殖) when isolated from males. This ability not only ensures the survival of the species but also demonstrates the adaptability of these creatures to their environments. In instances where males are absent or in low numbers, females can still propagate their genetic material, ensuring that their lineage continues.Plants also exhibit parthenogenesis (孤雌生殖) in various forms. Certain flowering plants can produce seeds without fertilization, a process that can be advantageous in stable environments where genetic variability is less critical. This capability allows for rapid colonization and establishment in suitable habitats, demonstrating how parthenogenesis (孤雌生殖) can be an effective reproductive strategy across different life forms.The study of parthenogenesis (孤雌生殖) has significant implications for understanding evolutionary biology. It challenges traditional views of reproduction, which typically emphasize the importance of genetic diversity achieved through sexual reproduction. By examining species that utilize parthenogenesis (孤雌生殖), scientists can gain insights into the advantages and disadvantages of asexual reproduction. For instance, while parthenogenesis (孤雌生殖) allows for quick population growth, it may also lead to reduced genetic diversity, making populations more vulnerable to diseases and environmental changes.In conclusion, parthenogenesis (孤雌生殖) is a remarkable reproductive strategy that highlights the diversity of life on Earth. From bees to reptiles and plants, this phenomenon showcases the incredible adaptability of organisms in various environments. As we continue to study parthenogenesis (孤雌生殖), we can further understand the complexities of reproduction and the evolutionary paths that different species take. This knowledge not only enriches our understanding of biology but also informs conservation efforts, as we strive to protect the unique reproductive strategies that sustain biodiversity in our world.

孤雌生殖是一种迷人的生物现象，发生在某些物种中，使它们能够在没有雄性受精的情况下繁殖。这种无性繁殖的形式已在多种生物中观察到，包括一些昆虫、爬行动物甚至植物。这个术语本身来自希腊语单词“parthenos”，意为处女，以及“genes”，意为出生或由……产生。实质上，parthenogenesis（孤雌生殖）使生物能够从未受精的卵子中产生后代，从而导致一种独特的繁殖模式，引发了关于进化和适应性的许多问题。最著名的parthenogenesis（孤雌生殖）例子可以在某些蜜蜂物种中找到，特别是雄蜂。雄蜂是由未受精卵通过parthenogenesis（孤雌生殖）发育而成的。这意味着工蜂可以在没有雄性交配的情况下产生雄蜂。这种繁殖策略使蜂巢即使在缺乏雄性的情况下也能维持其种群，这在配偶稀缺的环境中是有利的。另一个有趣的案例出现在某些爬行动物中，如科莫多龙。已知雌性科莫多龙在与雄性隔离时能够通过parthenogenesis（孤雌生殖）繁殖。这种能力不仅确保了物种的生存，还展示了这些生物对其环境的适应性。在雄性缺失或数量较少的情况下，雌性仍然可以传播其遗传物质，确保其血统持续。植物也以各种形式表现出parthenogenesis（孤雌生殖）。某些开花植物可以在没有受精的情况下产生种子，这一过程在基因变异性较低的稳定环境中可能是有利的。这种能力使得在适宜栖息地中快速殖民和建立成为可能，展示了parthenogenesis（孤雌生殖）如何成为不同生命形式中有效的繁殖策略。对parthenogenesis（孤雌生殖）的研究对理解进化生物学具有重要意义。它挑战了传统的繁殖观念，通常强调通过性繁殖实现基因多样性的重要性。通过考察利用parthenogenesis（孤雌生殖）的物种，科学家可以深入了解无性繁殖的优缺点。例如，尽管parthenogenesis（孤雌生殖）允许快速增长种群，但它也可能导致基因多样性的减少，使种群更容易受到疾病和环境变化的影响。总之，parthenogenesis（孤雌生殖）是一种非凡的繁殖策略，突显了地球生命的多样性。从蜜蜂到爬行动物和植物，这一现象展示了生物在各种环境中的惊人适应能力。随着我们继续研究parthenogenesis（孤雌生殖），我们可以进一步理解繁殖的复杂性以及不同物种所走的进化路径。这一知识不仅丰富了我们对生物学的理解，还为保护工作提供了信息，因为我们努力保护维持我们世界生物多样性的独特繁殖策略。