haploid

简明释义

英[ˈhæplɔɪd]美[ˈhæplɔɪd]

adj. 单一的

n. [细胞][遗] 单倍体

英英释义

单词用法

同义词

反义词

例句

1.The gender ratio of X chromosome and Y chromosome was almost same in the haploid.

单倍体中含有X-性染色体和含有Y-性染色体的性比基本相同。

2.The technology of anthers culture in vitro is one of the best effective methods of modern biology breeding for plant haploid breeding.

通过花药离体培养技术开展植物单倍体育种工作是现代生物技术育种最有效的手段之一。

3.Naturally doubling rate of haploid was significantly related with planted environment, not related with bas.

单倍体自然加倍率的高低与种植环境关系密切，与基础材料无关。

4.Haploid and autosomal variation within a linguistic continuum of the Uralic-speaking people of Eurasia.

单倍体和常染色体显示欧亚大陆的乌拉尔语言为母语的人是连续的。

5.Potato haploid induction has significant meaning in potato breeding, It includes parthenogenesis and anther culture methods.

马铃薯单倍体诱导在马铃薯育种实践中具有重要意义，它包括孤雌生殖和花药培养等方法。

6.A high oil haploid inducer named CAUHOI released by China Agricultural University was used in the study of haploid inducing and doubling.

利用中国农业大学选育的高油型孤雌生殖单倍体诱导系（CAUHOI）对提高玉米单倍体诱导率和加倍率的方法进行了研究。

7.Anther culture has enhanced the capacity to generate large Numbers of haploid plants.

花药培养增强了产生大量单倍体植株的能力。

8.Gametes are haploid 单倍体, meaning they contain only one set of chromosomes.

配子是haploid 单倍体的，这意味着它们只包含一套染色体。

9.In plants, the haploid 单倍体 stage is often represented by the gametophyte generation.

在植物中，haploid 单倍体阶段通常由配子体世代表示。

10.Fertilization restores the diploid state from the haploid 单倍体 gametes.

受精作用将来自haploid 单倍体配子的状态恢复为二倍体。

11.The haploid 单倍体 number of chromosomes in humans is 23.

人类的haploid 单倍体染色体数量为23。

12.During meiosis, the parent cell divides to produce four genetically diverse haploid 单倍体 cells.

在减数分裂过程中，母细胞分裂产生四个遗传多样的haploid 单倍体细胞。

作文

In the study of biology, understanding the concept of haploid (单倍体) organisms is crucial for grasping the fundamentals of genetics and reproduction. A haploid cell is defined as a cell that contains only one complete set of chromosomes, which is half the number of chromosomes found in diploid cells. In humans, for instance, the diploid number is 46, meaning that a haploid cell, such as a sperm or egg, would contain only 23 chromosomes. This reduction in chromosome number is essential for sexual reproduction, allowing for genetic diversity and the proper combination of genetic material from both parents.When two haploid gametes, one from each parent, fuse during fertilization, they form a diploid zygote. This zygote then undergoes numerous rounds of cell division and differentiation to develop into a fully formed organism. The haploid stage is not only significant in animals; it is also observed in plants and fungi, where the alternation of generations can involve both haploid and diploid life stages. For example, in flowering plants, the haploid phase is represented by the pollen grains and ovules. Once fertilization occurs, the resulting zygote grows into a diploid sporophyte, which eventually produces spores through meiosis, leading back to the haploid generation. This cycle highlights the importance of haploid cells in maintaining genetic variation across generations, which is vital for the adaptation and evolution of species.In addition to their role in reproduction, haploid organisms are often used in scientific research, particularly in the fields of genetics and molecular biology. For instance, yeast, which is a haploid organism, serves as a model organism in many genetic studies due to its simple genome and ease of manipulation. Researchers can easily induce mutations in haploid yeast cells, allowing them to study the effects of specific genes and pathways without the complications that arise in diploid organisms.Furthermore, understanding haploid genetics has practical applications in agriculture and biotechnology. For instance, plant breeders often utilize haploid techniques to produce homozygous lines more quickly. By inducing haploid production through methods like anther culture, breeders can create plants that have uniform traits, which is desirable for crop improvement.In conclusion, the concept of haploid (单倍体) cells is fundamental to our understanding of biological processes, particularly in relation to reproduction and genetic variation. Whether in the context of human biology, plant life cycles, or scientific research, haploid organisms play a vital role in the continuity of life and the advancement of genetic studies. As we continue to explore the intricacies of genetics, the significance of haploid cells will undoubtedly remain a key focus in both academic and applied sciences.