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单词 chromosome
释义

chromosome /ˈkrəʊməsəʊm//ˈkroʊməsoʊm/

英汉-汉英词典
n. <生>染色体
形容词: chromosomal
词组 | 习惯用语
y chromosome n. [生]Y染色体
chromosome aberration [医]染色体畸变
x chromosome n. [生]X染色体(性染色体的一种)
sex chromosome 性染色体
chromosome doubling 染色体加倍;染色体复制;染色体配对
homologous chromosome 同源染色体
chromosome pairing 染色体配对,染色体接合
chromosome translocation 染色体易位
英语例句库
  1. Dynein also helps force apart chromosomes during cell division.
    以及在细胞分裂中,提供了机械能协助染色体的分离。”
  2. Chromosomes also determine the sex of animals.
    色体也决定动物的性别。
  3. The polytene chromosomes found in the salivary gland cells are among the largest chromosomes known today.
    唾液腺细胞中的多线染色体是目前已知的最大染色体之一。
  4. These translocation lines were generated from homeologous chromosome pairing, or mis-division and reconstruction of univalent chromosomes.
    染色体易位有的来源于同祖配对交换,有的来源于单价体错分裂或断裂的重建。
  5. Lysogeny is a semi-permanent association between the phage and host chromosomes.
    溶源性是噬菌体和寄生染色体之间的半永久联合。
  6. The polymorphy of fronds and chromosome number of Ophioglossum petiolatum Hook.
    有梗瓶尔小草叶的多形性和染色体数目.
  7. If both of a pair of homologous chromosomes are missing, nullisomy results.
    如果一对同源染色体都缺失了,称为缺体。
  8. Y chromosome has two types of polymorphism:metacentric (or submetacentric) and acrocentric chromosomes.
    染色体有中部(或亚中部)和近端着丝粒染色体。
  9. In the nucleoplasm chromosomes consisting of deoxyribonucleic acid (DNA) and proteins are present.
    核质中的染色体由脱氧核糖核酸(DNA)和蛋白质构成。
  10. In plants this is sometimes overcome by the doubling of the chromosome number, giving an allopolyploid.
    在植物中,这种不育现象有时可因为染色体数目加倍而抵消,产生同源多倍体。
  11. Chromomere A small beadlike deeply staining structure seen in chromosomes during prophase of mitosis and meiosis.
    在有丝分裂及减数分裂的前期存在于染色体上的小念珠状的着色深的结构。
  12. Another role of siRNA is directing RITS complex to bind with homologue chromosome, and then induces heterochromatinization.
    除了与RISC结合外,siRNA还引导了RITS复合物结合到同源染色质,介导异染色质化过程。
  13. There were detestably close synapses between homologous chromosomes during thellateprophase and early metaphase in mitosis of somatic cells.
    发现在其有丝分裂的晚前期、中期阶段,咯对同源染色体都在进行联会。
  14. But many primates, including humans, hae a third photopigment, encoded by a second gene on the X chromosome.
    但是多数灵长类包括人类有着三种感光色素,通过在X染色体中的第二种基因编码。
  15. In contrast to homoploid hybrid species,polyploid species are easily diagnosed because of chromosome number changes associated with genome doubling.
    与同倍杂合体物种相比,因为与基因组加倍相关的染色体数目的变化,多倍杂合体物种很容易判断。
  16. At this point esch chromosome consist of a pair of chromatids and the two associated chromosomes are termed a tetrad.
    此时每条染色体由一对染色单体构成,这两条联合的染色体称为四分体。
  17. These results indicated that a nonhistone protein scaffold really existed and distributed as granules and fibres over the whole chromosomes.
    染色体骨架在小麦中是真实存在的,骨架蛋白以颗粒和纤维状的形式分布于整个染色体中。
  18. Karyotaxonomy of parasitic wasps will probably develop in the future through further data accumulation and increasing use of chromosome banding methods.
    通过核型数据的进一步积累和染色体显带方法的进一步应用,寄生蜂的核型分类学将得到进一步的发展。
  19. Karyogram (idiogram) The formalized layout of the KARYOTYPE of a species, often with the chromosomes arranged in a certain numerical sequence.
    一个种染色体组的固定排列。
  20. Polysomy, which includes trisomy, is the condition in which one or more chromosomes are represented more than twice in the cell.
    多染色体包括三染色体都是一条或多条染色体代替了正常细胞中的两条染色体形成的。

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原声例句
透视百科科技类

We know that radiation causes or will induce these chromosome aberrations, or rearrangement of the chromosomes.

我们已知辐射会引起或诱发染色体的畸变或重排。

TED演讲(视频版) 2019年1月合集

We all have XX chromosomes, right?

我们都有XX染色体,对吧?

双语版 TED-Ed 演讲精选

HeLa cells themselves actually have around 80 highly mutated chromosomes.

海拉细胞自己拥有大约八十条高度变异的染色体

生物学基础入门

Within most nuclei, there are x-shaped chromosomes.

在大多数细胞核内,有 x 形染色体。

透视百科科技类

For one, there were signs of radiation damage in Scott's chromosomes.

首先,斯科特的染色体中有辐射损伤的痕迹。

生物学基础入门

Chromosomes occur in pairs, but the number of chromosomes change depending upon the species.

染色体成对出现,但染色体的数量因物种而异。

Osmosis-血液肿瘤

In the translocation, the two chromosomes swap large pieces of chromosome with each other.

在易位过程中,两条染色体交换了大量的染色体片段。

日常生活医学科普

In this process, a portion of one chromosome breaks off and attaches to a different chromosome.

在这个过程中,一条染色体的一部分脱落并附着在另一条染色体上。

世界节假日

Down Syndrome is a disorder of the chromosomes.

唐氏综合症是染色体疾病

生物学基础入门

DNA is found within these chromosomes.

DNA 存在于这些染色体中

中文百科

染色体

染色体结构图
染色体结构图
染色体结构
电子显微镜下的人类染色体。

染色体结构图

染色体英语:chromosome)是真核生物特有的构造,主要由双股螺旋的去氧核糖核酸和5种被称为组蛋白的蛋白质构成,与基因有密切关系。

1879年,德国生物学家华尔瑟·弗莱明(Walther Flemming)称这种丝状体为染色体(英语:chromosome希腊语:chroma=颜色,希腊语:soma=体),意即可染色的小体,并猜测染色体与遗传有关。1902年,博韦里(T·Boveri)和萨顿(W·S·Sutton)指出,染色体在细胞分裂中的行为与孟德尔的遗传因子平行:两者在体细胞中都成对存在,而在生殖细胞中则是单独存在的;成对的染色体或遗传因子在细胞减数分裂时彼此分离,进入不同的子细胞中,不同对的染色体或遗传因子可以自由组合。因而,博韦里和萨顿认为,染色体很可能是遗传因子的载体。

英语百科

Chromosome 染色体

Diagram of a replicated and condensed metaphase eukaryotic chromosome. (1) Chromatid – one of the two identical parts of the chromosome after S phase. (2) Centromere – the point where the two chromatids touch. (3) Short arm. (4) Long arm.
Walter Sutton (left) and Theodor Boveri (right) independently developed the chromosome theory of inheritance in 1902.
Organization of DNA in a eukaryotic cell.

A chromosome (from Greek:χρῶμα color and σῶμα body) is a packaged and organized structure containing most of the DNA of a living organism. It is not usually found on its own, but rather is structured by being wrapped around protein complexes called nucleosomes, which consist of proteins called histones. The DNA in chromosomes is also associated with transcription (copying of genetic sequences) factors and several other macromolecules. During most of the duration of the cell cycle, a chromosome consists of one long double-stranded DNA molecule (with associated proteins). During S phase, the chromosome gets replicated, resulting in an X-shaped structure called a metaphase chromosome. Both the original and the newly copied DNA are now called chromatids. The two "sister" chromatids join together at a protein junction called a centromere. Chromosomes are normally visible under a light microscope only when the cell is undergoing mitosis (cell division). Even then, the full chromosome containing both joined sister chromatids becomes visible only during a sequence of mitosis known as metaphase (when chromosomes align together, attached to the mitotic spindle and prepare to divide). This DNA and its associated proteins and macromolecules is collectively known as chromatin, which is further packaged along with its associated molecules into a discrete structure called a nucleosome. Chromatin is present in most cells, with a few exceptions, for example, erythrocytes. Occurring only in the nucleus of eukaryotic cells, chromatin composes the vast majority of all DNA, except for a small amount inherited maternally, which is found in mitochondria. In prokaryotic cells, chromatin occurs free-floating in cytoplasm, as these cells lack organelles and a defined nucleus. Bacteria also lack histones. The main information-carrying macromolecule is a single piece of coiled double-stranded DNA, containing many genes, regulatory elements and other noncoding DNA. The DNA-bound macromolecules are proteins, which serve to package the DNA and control its functions. Chromosomes vary widely between different organisms. Some species such as certain bacteria also contain plasmids or other extrachromosomal DNA. These are circular structures in the cytoplasm, which contain cellular DNA and play a role in horizontal gene transfer.

近义、反义、联想词
近义词
n.
body

联想词
chromosomal染色体的;gene基因,遗传因子;genome基因组;alleles对立形质;allele等位基因;mutation突变;autosomal常染色体的;loci地点;genetic遗传的;recombination再结合;locus轨迹;
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更新时间:2025/6/17 14:32:47