释义 |
chromosomes 英k'rəʊməsəʊmz美k'rəʊməsəʊmz COCA²¹¹⁴⁰BNC¹¹⁸⁸³Economist¹⁹⁰⁵⁰⁺⁹ 基本英英Thesaurus例句 同源染色体¹⁰⁰原型chromosome的复数 名词 chromosome: a threadlike strand of DNA in the cell nucleus that carries the genes in a linear orderas in.DNA 同义词 RNA,gene,hereditygenetic code,nucleic acid DNAnoun deoxyribonucleic acid RNA,chromosome,gene,genetic code,heredity,nucleic acid And they found that the plants that bounce back after clipping boost their DNA content— some of their cells go from having10 chromosomes to having320. 他们发现,那些受损后迅速恢复的植物 DNA含量暴增——其中一些原本只有10个染色体细胞,已经拥有了320个染色体。 yeeyan And we’ll benefit as smart and talented women belatedly have the opportunity to deploy their skills on behalf of all of humanity— including those of us with Y chromosomes. 当聪慧的女性终于有机会施展自己的才能的时候,我们男性也将从中受益,而这将为全人类造福,包括我们这些带有 Y染色体的男性。 yeeyan The chromosomes duplicated in mitosis. 染色体在有丝分裂中会重复。《21世纪大英汉词典》 Because females have two X chromosomes, and males have only one combined with a Y chromosome, females have a“ backup” copy of any gene that is mutated. 因为女性有两条 X染色体而男性只有一条与 Y染色体相结合,女性有任何一种突变基因的“备用”基因。 yeeyan But previous radiation experiments on animals suggest the boost in males may be due to damage to X chromosomes in sperm, Scherb said. 但根据以前对动物的辐射研究表明,男性的增加可能是因为精子中的 X染色体更容易受到损伤。 yeeyan Chimps have24 pairs of chromosomes, and humans23, but this is not an absolute barrier to breeding. 黑猩猩有24对染色体,人类有23对,不过这并不能完全阻止两个物种间的杂交。 yeeyan Every cell in the human body, apart from eggs and sperm, contains two copies of each of the body's23 chromosomes. 除了卵子和精子以外,人体中的每个细胞含有每一个人体23对染色体中的两个副本。 yeeyan Exactly how chromosomes take their necessary shapes, and how these shapes then affect genes, is still unknown. 染色体究竟是如何形成特定的形状,然后又如何影响基因,这还不得而知。 yeeyan For a few weeks, these chromosomes are all that differentiates male embryos from female embryos. 在这八周了,这些染色体是男性胚胎和女性胚胎的唯一区别。 yeeyan If one of our chromosomes was formed by the fusion of two primate chromosomes, you know what it would have? 如果我们的一条染色体是由两条灵长类染色体融合而来的话,猜猜它能有点什么? yeeyan In a true hybrid, the genetic material from the two species is mingled at conception, with half the chromosomes coming from one parent and half from the other. 在实际的融合过程中,由两个物种的遗传物质在概念上是可交融的,染色体的一半来自父母一方,一半来自另一方。 yeeyan Is it possible that a pair of chromosomes just got lost in our lineage? 可不可能这对染色体只是在我们人类的族系中丢失的呢? yeeyan Mitosis is the process in which the duplicated DNA in the form of chromosomes is accurately distributed to the two daughter cells when a cell divides. 有丝分裂是指,当一个细胞分裂时,复制好的 DNA以染色体的形式精确地分配到两个子细胞中的过程。 yeeyan Most of the cells in our bodies contain long molecules of DNA called chromosomes that have protective caps at either end called telomeres. 我们身体中的大部分细胞都含有叫作染色体的 DNA分子长链。 染色体在其两端有保护帽,叫做端粒。 yeeyan Retroviruses work by adding their genes into the chromosomes of their hosts, which then merrily churn out bits of new viruses. 逆转录病毒将他们的基因加入寄主的染色体内,而寄主染色体会产生一些新的病毒。 ecocn The exception to this is the sex cells, sperm, and oocytes or eggs, as these contain only23 single chromosomes. 唯一例外的是性细胞,精子,卵母或卵子,因为它们只含有23个单染色体。 yeeyan The next step is to try to create stem cells without the leftover chromosomes from the egg. 下一步就是使得到的干细胞不再有多出来的那条来自卵细胞的染色体。 ecocn The technique allows doctors to screen fresh eggs for abnormal chromosomes, which are a major cause of miscarriage. 该项技术能够让医生检测卵细胞中的异常染色体,这通常是流产的主要原因。 yeeyan The virus must copy its genes into the host cells’ chromosomes before these genes can be used. 在病毒的基因可以被使用之前,病毒一定要把它的基因复制到宿主的染色体中。 yeeyan These DNA units, known as telomeres, act like the plastic caps at the ends of a shoelace, keeping the chromosomes from fraying and the genes inside them from unraveling. 这些 DNA部分即所谓的端粒,它们的作用类似鞋带两头的塑料帽,可以保持染色体不会磨损,里面的基因不会散开。 iciba This flexibility has benefits, but it also has a drawback: the parasites have to keep track of their chromosomes… even as they change their minds about how and when to divvy them up. 这种灵活的繁殖方式有优点也有缺点:就算是寄生虫想用不同方式或者想在不同时间分开染色体进行复制,它们都必须跟踪记录自己的染色体信息。 hjenglish Unlike shoelaces, though, chromosomes replicate themselves from time to time as the cells they are in divide. 和鞋带不同的是,随着它们所在细胞的分裂,染色体可以不断进行复制。 ecocn Up to half the eggs of young women and up to 75% of those in women over39 have abnormal chromosomes. 年轻妇女多达一半的卵细胞以及年届39岁以上妇女75%的卵细胞会有染色体异常现象。 yeeyan ' The tips of chromosomes wear down and telomerase helps to replenish them, ' keeping them at a proper length. 染色体的顶端会磨损,而端粒酉每可以帮助其修复,使其保持一个合适的长度。 iciba Chromosomes are strands of DNA that carry genes, and there are23 pairs in almost every cell in the body. 染色体是由携带着基因的 DNA分子链组成,人体内几乎所有的细胞都有23对染色体。 yeeyan |