染色体

科学家们希望找出该基因在染色体中的位置。

The scientists want to locate the position of the gene on a chromosome

每个染色体由两个染色单体所组成，它们被一个着丝点联结在一起。

Each chromosome consists of two chromatids held together by the centromere .

我们人体的每个细胞都包含46个染色体。

Each cell of our bodies contains 46 chromosomes .

利用显微镜检查细胞染色体可以发现胎儿的性别。

Microscopic examination of a cell 's chromo-somes can reveal the sex of the fetus .

四种染色体的每一种都沿着纵向分裂。

Each of four chromosomes divide longitudinally .

人的x和y染色体跟常染色体有不同的活动。

Human X and Y chromosomes behave differently from the autosomes .

转位因子或插入因子是能够插入到染色体不同位点的dna序列。

Transposable elements , or insertion elements , are DNA sequences which can be inserted into many different sites in chromosomes .

在中期Ⅰ8对染色体的分布是无秩序的。

The eight chromosomes were randomly distributed at metaphase I.

交换现象独立地在每一对同源染色体之间发生。

Cross-overs have occured independently of each other between pair of homologous chromosomes .

一个核可以仅有一个y染色体。

A nucleus can have only one y-chromosome .

特殊染色体存在着几个拷贝。

Several copies of specific chromosome are present .

鸭嘴兽跟人类一样，也有X和Y染色体

Like humans , platypuses carry an X and a Y chromosome .

及rRNA同mRNA一样，都是染色体DNA的转录产物

Like mRNA , both tRNA and rRNA are transcripts of chromosomal DNA . tRNA

纽卡斯尔大学的这项研究表明，一个至今尚未发现的基因决定了男性的精子里含有更多的X还是Y染色体，而精子所含的染色体会影响孩子的性别。

The Newcastle University study suggests that an as-yet undiscovered gene5 controls whether a man 's sperm contains more X or more Y chromosomes6 , which affects the sex of his children .

从更大范围来看，产生更多含X染色体精子的男性与产生更多含Y染色体精子的男性数量之比，影响着每年新生儿的性别比例。

On a larger scale , the number of men with more X sperm compared to the number of men with more Y sperm affects the sex ratio of children born each year .

X染色体与母亲的X染色体结合，就会生出女孩（XX）；而Y染色体和母亲的X染色体结合则会生出男孩（XY）。

An X chromosome combines with the mother 's X chromosome to make a baby girl ( XX ) and a Y chromosome will combine with the mother 's to make a boy ( XY ) .

流产通常是因为胎儿的染色体异常造成的。

Miscarriages are usually caused by abnormal chromosome patterns in the fetus .

染色体也决定动物的性别

Chromosomes also determine the sex of animals .

这些位于染色体末端的小帽子能够保护染色体不受损。

These are caps on the ends of chromosomes3 that protect the chromosomes from damage .

全血无酚法制备染色体DNA

Preparation of Chromosomal DNA from Whole Blood Without Use of Phenol

通过基因与染色体改变也可以建立判断弥漫大B细胞淋巴瘤异质性的模型。

Alterations of some genes and chromosomes can analyze DLBCL heterogeneity as well .

锯缘青蟹染色体和DNA含量的分析

Studies on Chromosomes and Relative DNA Content of Scylla Serrata

也可以破坏遗传性卵巢癌病毒染色体（DNA）。

Also can damage the hereditary ovarian cancer virus chromosome ( DNA ) .

DNA分析发现有染色体丢失和移位。

Chromosomal analysis shows chromosome loss and translocation .

用间期细胞FISH技术快速分析性腺发育不全患者的性染色体数目异常

Rapid detection of numerical sex chromosome abnormality on male gonad agenesis by interphase FISH

方法绒毛细胞培养法及G显带制作染色体分析。

Methods Use villus cell culture and the chromosome with G-bands by trypsin using Giemsa .

方法原位法培养羊水细胞并制备染色体，G显带分析核型；

Methods Amniotic fluid cells were cultured in situ and their karyotypes were analyzed by G band .

小鼠成纤维细胞早中期染色体标本制备及G带核型分析

The Methods of Preparing Early Metaphase Chromosomes and the Study on Their G-banding Patterns in Mouse Fibroblasts

X染色体与性别鉴定

X-chromosome typing and sex determination

其中1例患者经双色FISH检测证实两个衍生的20号染色体为伴有中间缺失的20号长臂等臂染色体。

Two derivative chromosomes 20 were proved 20q isochromosomes with interstitial deletions by dual-color FISH in one patient .