| 1. | The illness is believed to be caused by a defective gene
这病被认为是由基因缺陷引起的。 |
| 2. | Single gene disease is the disease that shows by single gene blemish is caused
单基因病是指由单个基因缺陷引起的疾病。 |
| 3. | Our studies support the idea that there is a correlation between genetic defects and certain diseases
我们的研究支持一种看法，那就是，基因缺陷与某些疾病之间有关连。 |
| 4. | Before using the sperm to fertilize an egg , they could test it to make sure it was healthy and lacked the genetic defect
在用精子使卵子受精之前，他们先对精子进行检查，以确认它是健康且不存在基因缺陷的。 |
| 5. | Further research is needed to determine why this genetic defect appears to cause such a significant increase in stroke , they added
我们需要进一步的研究来确定为什么这个基因缺陷引起中风风险明显增加，他们补充说。 |
| 6. | The genetic defect was not associated with carotid atherosclerosis ( hardening of the arteries in the neck and head ) , the researchers said
这个基因缺陷与颈动脉粥样硬化（颈部和头部动脉硬化）没有关系，研究人员说。 |
| 7. | Deafness occurs most commonly when tiny hair cells inside the cochlea are damaged as a result of a genetic defect , infection , loud noise or aging
耳聋最常见的起因，是由于基因缺陷、感染、吵杂的噪音或老化等因素，让耳蜗内部细微的毛细胞受损所造成。 |
| 8. | The finding could have major implications for medicine and the development of gene therapy techniques in which people with a defective gene are given the correct version
这个发现给医学最大的启示是，通过基因治疗技术，把有功能的基因导入相应基因缺陷的病人体内。 |
| 9. | But the real problem is what often arrives in the same litter : genetically defective sister and brother puppies born with missing paws or faces lacking eyes and a nose
但真正的问题往往出现在同一窝小狗中：有基因缺陷的小狗狗兄弟姊妹，一出生就没有爪子，或脸上少了眼鼻。 |
| 10. | Some of this last third are known : genetic predisposition , ultraviolet sunlight , pollutants such as pesticides , and other factors including cosmic radiation and a naturally occurring radioactive gas called radon
已知的这些原因有：基因缺陷、日光的紫外线辐射、杀虫剂之类的污染物，其他的原因包括宇宙射线和自然产生的放射性气体? ?氡。 |
