Down syndrome ( ds ) is a condition in which extra genetic material causes delays in the way a child develops , and often leads to mental retardation 唐氏症是由附加的基因物质阻碍孩童发展的一种情况，而且通常会有智力迟缓的状况。
Once the membranes are fused , the virus dumps its genetic content into the healthy human cell ' s interior , hijacking the cell ' s replication machinery to clone itself 一旦细胞膜被融解，病毒就会将自身的基因物质倾注到健康的人体细胞中，并夺取人体细胞能量来进行病毒复制。
The team of researchers , led by fuhua yang at wuhan university , china , modified hepatitis delta to carry ' molecular scissors ' that cut into the genetic material of hepatitis b 以扬富华(音)为首的武汉大学一组研究人员将丁肝病毒修改,让其附带 '分子剪刀 ' ,可以将乙肝病毒的遗传基因物质切断
As a result , they have chosen not to procreate , and to withdraw the genetic materials out of those held in such a manner so that the information falls not into the hands of the dark forces in association with mankind 结果，它们已选择不再繁衍，并撤下这类状态下伙伴的基因物质，以便信息不会进入与人类相关的黑暗力量手中。
The test is based on the detection of the genetic material , namely rna , of the sars - coronavirus in blood . it accurately determines the amount of virus carried by the patient , while requiring only a small quantity of blood and a short period of analysis time 新方法测试sars冠状病毒的基因物质rna ，只需少量血液样本及用极短化验时间，已能极准确地掌握病者的病毒分量( virus load ) 。
The test is based on the detection of the genetic material , namely rna , of the sars - coronavirus in blood . it accurately determines the amount of virus carried by the patient , while requiring only a small quantity of blood and a short period of analysis time 新方法测试sars冠状病毒的基因物质rna ，只需少量血液样本及用极短化验时间，已能极准确地掌握病者的病毒分量( virusload ) 。
This reduced haplotype diversity is a result of the recent expansion of human populations from a small number of shared ancestors from africa , and is most marked in genomic segments called haplotype blocks , separated by gaps where genetic material has been historically reshuffled 单体型变化减少是因为近代人口的祖先都是源自少数非洲人，这可以在基因组分段的单体型区段清楚见到，由于进化演变关系造成之基因物质之间出现隔阂。
The fact that the team has not been able to find any genetic material of the virus in the building indicates the effectiveness of the cleansing and disinfection work which had been thoroughly undertaken before the residents were allowed to move back into the building 世?小组的调查结果有助淘大花园居民重拾信心，明白到他们的居所是安全的。小组在楼宇中并没有发现冠状病毒的基因物质，显示居民重返大厦前的清洁消毒工作是彻底和有效的。
This reduced haplotype diversity is a result of the recent expansion of human populations from a small number of shared ancestors from africa , and is most marked in genomic segments called haplotype blocks , separated by gaps where genetic material has been historically reshuffled 单体型变化减少是因为近代人口的祖先都是源自少数非洲人，这可以在基因组分段的单体型区段清楚见到，由于进化演变关系造成之基因物质之间出现隔阂。
The transgene of choice is then injected into a fertilized egg , which is obtained as follows ; a female mouse is injected with several hormones to cause it to produce numerous eggs ; the female is then mated with a male so that some of the eggs are fertilized ; the eggs are collected before they divide and are injected with the foreign genetic material 然后将这段基因注入受精卵，方法如下：对一只雌老鼠注射激素使其产生大量卵；让一只雄老鼠与其交配使部分卵受精；将这些卵收集起来，在其卵裂前注入外来基因物质。
