| 1. | The cells of a female body contain a or two x chromosomes ( xx )
女性体细胞含有一个或两个x染色体（ xx ） 。 |
| 2. | The x - chromosome has many genes for which there are no paired genes on the y - chromosome
X染色体有许多在y染色体上不能配对的基因。 |
| 3. | If we change the x chromosome to " y " by bombarment method ( or something like that )
如果我们用方法，将x染色体的其中一段打断，变成" y " ;染色体。 |
| 4. | Dosage compensation in female mammals is achieved by inactivating the transcription of one of the x chromosome
雌性动物的剂量补偿效应是通过细胞中一条x染色体的转录失活来实现的。 |
| 5. | Females have two x chromosomes while males have one x and one y . when chromosomes pair , the mismatched y determines male gender
女性有二x染色体当男性有一x并且一y 。当染色体配对,被配错的y确定男性性别。 |
| 6. | For example , in a genetic race or class distinction the use of the x chromosome markers can be used for the identification of a person ' s ethnicity or class
例如，在种族或阶层的遗传鉴定中，可以利用x染色体标志物确定个人所属的种族或阶层。 |
| 7. | Using rt - pcr method , we found that rat myocardial cells expressed lif mrna , which might suppress es cells differentiation and stabilize x chromosome
采用rt - pcr方法，检测出大鼠心肌细胞有lif mrna的表达，这可能与其条件培养基保持es细胞未分化状态并使x染色体稳定有关。 |
| 8. | From what you eat and drink to where you live , there ' s a special sickness lying in wait just for you if you have the misfortune to have two x chromosomes
如果很不幸你的基因是由两个x染色体组成，那么从你吃喝的东西到你生活的地方，这儿都有个专门的疾病在静静地等待着你。 |
| 9. | Xist is an important gene wich is located in the xic ( x chromosome inactivation center ) region and is closely related to the x chromosome inactivation
X染色体失活与位于“ x染色体失活中心” ( xic )上xist基因息息相关，主要表现在xist的转录产物通过包围一条x染色体使其沉默。 |
| 10. | To detect the patients and carriers of the fragile x syndrome , various analytic methods could be used . one is cytogenetic diagnosis to observe the expression of the fragile site fraxa located at xq27 . 3
对脆x综合征的诊断，可以通过细胞遗传学方法观察分析x染色体相应脆性位点的表达情况，或是通过southern印迹杂交的方法直接分析cgg重复的扩增突变。 |
