| 1. | A nucleus can have only one y-chromosome .
一个核可以仅有一个Y染色体。 |
| 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. | A nucleus can have only one y - chromosome
一个核可以仅有一个y染色体。 |
| 4. | It ' s all up to the only player without a y - chromosome , kate veatch
现在只剩下一个女性队员了，维奇小姐 |
| 5. | 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。 |
| 6. | The other is the y - chromosome , present only in males , which is passed down with only minor mutations through the male line
其他是y染色体,礼物只在男性,哪些被传与只较小变化通过男性线。 |
| 7. | This is because the oldest y - chromosome lineage in the americas originated in central asia 15 , 000 - 20 , 000 years ago , and then migrated to the northeast , across the bering strait
这是因为，在美洲，最老的y染色体血统起源于亚洲中部于15 ， 000至20 ， 000年以前，然后迁移到东北部跨过白令海峡。 |
| 8. | Although the boy ' s genetic father had never supplied his dna to the site , after nine months the boy was contacted by two men who were on the database and whose y - chromosome matched his own
虽然男孩的生父从未将自己的dna提供给该网站，但在9个月后，孩子就在网站的数据库中，找到了与他有着相似y染色体的其他两名男子。 |
| 9. | By sending a swab taken from the inside of his cheek for genetic testing , the teenager was able to use genealogy websites to trace his father by looking for men with a matching y - chromosome , which is passed down the male line
据新科学杂志11月2日报道，这名男孩寻找生父的过程似乎并不复杂他把带有自己唾液的药棉送到一家“家族dna服务”网站进行了dna测试。 |
| 10. | Objective to establish a complex pcr method and to investigate the genetic polymorphism and population difference of three loci on y - chromosome , so as to provide a database for forensic medicine casework . methods edta - blood specimens were collected from 163 unrelated males in han population in taiyuan . different tissues of one corpse were analyzed including blood , muscle , liver and kidney
方法( 1 )样本采集：随机抽取163名太原地区汉族无亲缘关系的男性个体的静脉血， edta抗凝，进行dys390 、 dys391和dys393基因座等位基因及单倍型频率分布调查；采集同一尸体血液、肌肉、肝脏、肾组织进行同一性检测；采集20例两代家系血进行突变观察；取20例女性个体血进行男性特异性检验。 |
