Y chromosomes

Human X and Y chromosomes behave differently from the autosomes .

人的x和y染色体跟常染色体有不同的活动。

After sequential routine and c-band staining and accurately identifying Y chromosomes , 18 Y chromosomes were measured , arm ratio of them was 3.19 , and therefore Y chromosome of Luxi cattle belonged to subtelocentric chromosome .

经常规&C带连续染色，准确识别出y染色体之后测量了18条y染色体，臂比为3.19，属亚端着丝点染色体。

Cases ( 5 2 % ) were large Y chromosomes .

7例（52%）为大Y染色体；

CDS Region Polymorphism Analysis of No.1 , X , Y Chromosomes of Human Genome

人类基因组1号、X、Y染色体CDS区多态性统计分析

Pairing between X and Y chromosomes was confined to part of them .

XY染色体配对仅限于部分区域。

There are abundant gene conversion between arms of palindromes in Y chromosomes of human which caused powers of self-preservation .

回文序列上经常发生臂间基因转换，使Y染色体具有自我保护能力。

Amelogenin ( AML ) gene locates on the conservative region of the bovine X and Y chromosomes .

牛牙釉蛋白（AML）基因定位于牛X染色体和Y染色体上的同源区域。

They used next-generation sequencing to establish the order of letters on the two Y chromosomes and then compared these to the Y chromosome reference sequence .

他们利用next-generation测序技术来确定这两个Y染色体的核苷酸序列，然后同对照序列进行比对。

In each karyotype , X chromosomes . were 2N and Y chromosomes Were 1N .

在每个核型中X染色体均为2N，Y染色体为N。

The result showed that all autosomes which have short arm were acrocentric , the X and Y chromosomes were submetacentric .

结果是牦牛常染色体均为近端点着丝粒染色体，X、Y染色体为亚中部着丝粒染色体。

Results : In five abnormal sex-differentiation cases . We found that three of them had red signals , which represented Y chromosomes , while two presented green signals meaning X chromosomes .

结果发现5例性分化异常患者中，3例标记染色体为代表Y染色体的红色信号，另2例标记染色体为代表X染色体的绿色信号。

Objective Based on the sequence differences of Amelogenin homologous gene in the X and Y chromosomes , a pair of specific primers was designed to identify the sex of archaeological samples .

目的利用人类性染色体Amelogenin同源基因在X、Y染色体上序列长度的差异，选择设计引物，对考古样本进行古DNA性别信息研究。

Analysis of the hybridization of probes drived from X and Y chromosomes to different genotype has demonstrated that the sequence differents exist between the sex chromosomes of O.niloticus .

对不同遗传型尼罗罗非鱼的有丝分裂中期相染色体进行荧光原位杂交表明，在尼罗罗非鱼中，X与Y染色体之问存在差异。

To reveal the relative contributions of the two roads to East Asian gene pools , variation of 5131 Y chromosomes from 120 East Asian populations and 4238 mtDNAs from 101 populations was analyzed .

为了探讨这两条迁徙路线对东亚人群基因库的相对贡献，本论文分析了120个东亚群体5131例个体的Y染色体DNA多态性，以及101个东亚群体4238例个体的线粒体DNA多态性。

Human amelogenin gene is a pair of alleles , which located at X and Y chromosomes . Study on the expression changes of amelogenin on the sex chromosomes has been an important method for sex identification .

人类釉原蛋白基因是分别位于X和Y染色体上的一对等位基因，其在两条性染色体上的不同表达成为性别鉴定的重要方法。

According to the 193 couples ' cytogenetic examination in this article , who are all suffered from natural abortion , it is found there are 12 abnormal chromosomal karyotypes and 4 hypernormal Y chromosomes .

本文对193对自然流产夫妇进行了细胞遗传学检查，发现染色体异常核型12例，大Y4例，共计16例。

There were 2 cases of abnormal sex chromosomes , 2 cases of big Y chromosomes and 7 cases of small Y chromosomes in the non obstructive azoospermic patients . No correlation was found between EGF and fructose in the seminal plasma .

非梗阻性无精子症组性染色体异常2例，大Y2例，小Y7例，精浆表皮生长因子、果糖两者间无相关性。

The bilayered tissue-engineered skin with keratinocyte stem cell of male children could be used to repair the skin defect of female rat . The results of RT-PCR suggested that Y chromosomes could be detected in the samples after three months and six months still visible to eight months .

用男性包皮角质干细胞构建的复合皮肤修复雌鼠全层皮肤缺损，取植入处少量组织检测到人的Y染色体494bp和294bp两个条带，且维持创面修复时间长达8个月。

Objective : To analysis the aneuploidy rate of X , Y and 18 chromosomes of sperms from a patient of Klinefelter 's syndrome and to guide the assisted reproductive treatment .

目的分析Klinefelter综合征病人精子X，Y，18染色体的非整倍体率（aneuploid），指导其辅助生育治疗。

In some , the Y genes seem to override expression of X genes even if there is only one Y and several X chromosomes , and the polyploids remain dioecious .

在有些植物中，即使只有一条Y染色体而有多条X染色体，但Y基因似乎会抑制x基因的表达，因此多倍体植物仍旧是雌雄异株。