首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
DNA fingerprinting is used to determine where particular genetic material came from, that is what person or group of people’ s m
DNA fingerprinting is used to determine where particular genetic material came from, that is what person or group of people’ s m
admin
2014-12-26
70
问题
DNA fingerprinting is used to determine where particular genetic material came from, that is what person or group of people’ s material is mostly likely to come from. Only 1% of our DNA differs from other individuals since 99% of human DNA is identical. That 1% though can allow scientists to differentiate its origin.
DNA fingerprinting is most commonly used to determine our heredity. When used alongside more traditional sociological methodologies, DNA fingerprinting can be used to find out exactly where we came from, in some cases, which tribe. However, DNA fingerprinting cannot discriminate between identical twins.
Most people are aware of the use of DNA fingerprinting in forensic medicine. Samples gathered at a crime scene can be compared with the DNA of a suspect to prove his or her presence at or involvement with the crime. The problem is that DNA bases only hold the DNA of people who have already been convicted of a crime. They do not contain the DNA of whole populations so it impossible to use this technique to track down suspects that are nor present in the database. However this might change. If governments replace photograph ID cards to that of DNA fingerprint ID cards, then it will be far easier to track down anyone within a nation’ s population.
DNA fingerprinting can also help us to predict our future health. It is often used to track down the genetic basis of inherited diseases. If there is a particular, recurring pattern in different patients, scientists can narrow down which gene or genes might be involved. It can also be used to screen parents and fetuses for the presence of inherited abnormalities, such as Huntington’s disease or muscular dystrophy, so appropriate advice can be given and
precautions
taken as needed.
The use of DNA fingerprinting and genetic screening is fast in changing society and the way we treat illnesses, track down criminals and soon, identify the public. It is a science that has dramatically changed society and continues to make great contributions to health and science in all fields.
What is the main purpose of DNA fingerprinting?
选项
A、To distinguish people from different countries.
B、To analyze the evolvement of human beings.
C、To observe the development of genes.
D、To identify who probably possesses a certain genetic.
答案
D
解析
细节题。题干问:DNA指纹识别法的主要目的是什么?原文首段第一句,“DNA fingerprinting is used to determine where particular genetic material came from,that is what person or group of people’s material is mostly likely to come from.”意为DNA指纹识别法被用来判断特定遗传物质的来源,即这个物质最有可能来自哪个人或哪群人。选项D,用来辨认谁拥有某一特定的基因,为近义替换。选项A,区别不同国家的人,不是主要用途。选项B,分析人类的进化;选项C,观察基因的发展。均未在文中提及。
转载请注明原文地址:https://kaotiyun.com/show/RZm7777K
0
大学英语六级
相关试题推荐
A、Ancientpeopleextractedjuicefromgrapes.B、Peoplestoredgrapesincontainersforwine.C、Juicefromripegrapesunexpected
A、Thedisadvantagesoflivingintheruralarea.B、Theimportanceofimprovinglivingenvironment.C、Themostimportantthingin
A、Mostborrowersneverreturnedthebookstoher.B、Themanistheonlyonewhobroughtherbookback.C、Sheneverexpectedanyo
A、Smith’sstoriesaremostlyforyoungsters.B、Youngpeoplelacklogicthinking.C、Themandoesn’tthinkmuchofSmith’snovels.
Economistsusuallystudymarkets.Now,twoAmericanshavewontheNobelPrizeineconomicsfornotstudyingmarkets.Theywills
A、TrytraditionalChinesetreatment.B、Takepain-killersontime.C、Gotothehospitalrightaway.D、Stayinbedforseveralday
Oneofthemostimportantsocialdevelopmentsthatmadepossibleashiftinthinkingabouttheroleofpubliceducationwasthe
Oneofthemostimportantsocialdevelopmentsthatmadepossibleashiftinthinkingabouttheroleofpubliceducationwasthe
Oneofthemostimportantsocialdevelopmentsthatmadepossibleashiftinthinkingabouttheroleofpubliceducationwasthe
"Nothingraisesmorefearinarepressivegovernmentthanchallengestothecontrolofinformation.Andnothingismoreimportan
随机试题
A.基底膜顶段最大振幅振动B.基底膜中段最大振幅振动C.基底膜起始段最大振幅振动D.基底膜起始段振动,然后以行波形式向顶部传递E.行波经过最大振动的点后,振幅急剧减小,最后消失中频声波传入耳蜗将引起
A.垂体ACTH微腺瘤B.小细胞性肺癌C.肾上腺皮质腺瘤D.肾上腺皮质腺癌引起异位性ACTH综合征的原因是
患者男性,39岁。行毕Ⅱ式胃大部切除术(输入段对小弯术式)后2周,出现上腹部胀痛的症状,多出现在进食后半小时左右,伴有恶心和呕吐,呕吐物为胆汁样液体,不含食物;吐后症状明显减轻。查体:患者消瘦,轻度脱水表现,上腹部轻压痛,未闻及振水音。引起上述症状最可能的
坐骨神经痛最常见的病因是
枳实消痞丸的君药为枳实导滞丸的君药为
医学伦理学的核心问题是()
2016年某企业进行人力资源需求与供给预测。该企业现有业务员200人,业务主管10人,销售经理5人,销售总监1人。该企业人员变动矩阵如下表。通过统计研究发现,销售额每增加1000万元,需增加管理人员、销售人员和客服人员共40名,新增人员中,管理人员、销售人
为向A公司支付购买机器设备的货款,B公司向自己开户的C银行申请开具银行承兑汇票。C银行审核同意后,B公司依约存入C银行300万元保证金,并签发了以自己为出票人、A公司为收款人、C银行为承兑人、金额为1000万元、见票后3个月付款的银行承兑汇票,C银行在该汇
将中华民族的历史以影像化的形式呈现出来,认真创作出尊重历史事件、尊重历史人物的电视剧精品,是电视对塑造国家形象和弘扬民族精神的贡献,也是其义不容辞的社会责任。随着时代的变迁,人们获取知识的来源已经更多地从纸质文字转向了网络和电视,尤其是现在中国电视剧的受众
Americansbelievesomuchinmovingaheadthattheyare【C1】______researching,experimentingandexploring.Theytreattimeas
最新回复
(
0
)