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
考研
【F1】A tiny number of people in the world carry genetic mutations that were thought to guarantee the development of severe childh
【F1】A tiny number of people in the world carry genetic mutations that were thought to guarantee the development of severe childh
admin
2019-08-08
57
问题
【F1】
A tiny number of people in the world carry genetic mutations that were thought to guarantee the development of severe childhood diseases, but these people do not actually have these diseases, according to a new study.
In the study, researchers looked at the genetic data from more than half a million people from around the world. The scientists found 13 adults who carried the exact genetic mutations that cause diseases such as cystic fibrosis, which severely affects the lungs and digestive system, or a condition called Pfeiffer syndrome, which affects the bones of the skull. But despite the mutations, these adults had not developed these diseases.
【F2】
The results may be the first step toward identifying ways to prevent other people who also have these mutations from developing such diseases.
The idea of the new research was, "study the healthy, don’t just study the sick," said Stephen Friend, a co-author of the study and a researcher at Sage Bionetworks in Seattle. In the study, the researchers looked at the genetic data of about 589,000 people. The information came from 12 previously collected data sets. 【F3】
The researchers said they wanted to see if, among these people, there were any individuals who remained healthy despite carrying certain genetic mutations linked to severe childhood disorders.
The researchers focused on diseases that are caused by mutations in a single gene, and have severe symptoms that generally show up early in childhood. In their search, the investigators found three adults who did not have cystic fibrosis, despite having mutations on both copies of the CFTR gene, which normally causes the condition, according to the study.
The researchers said they don’t know for sure exactly why these people failed to develop the diseases that they seemed genetically destined for. 【F4】
However, one possibility is that these individuals also have other genes that somehow suppress these disease-causing mutations, preventing these people from getting sick, said study co-author Rong Chen.
The researchers noted the study had limitations. For example, the investigators said they were not able to contact the 13 people identified in the study, because the researchers did not have the means to obtain consent from the people to do so. 【F5】
This means the scientists were not able to interview the individuals, physically examine them or verify the accuracy of the genetic information that the researchers got from the previously collected data sets.
It is therefore not possible to determine with certainty that these people are truly resistant to these diseases without further information, the researchers said.
【F1】
选项
答案
世界上有一小部分人发生了基因突变,很可能因而患上严重的儿童疾病。但一项新研究表明,这些人实际上并没有患病。
解析
①本句是but连接的并列复合句。分句1的主干是简单的主谓宾结构,其中包含了that引导的定语从句,修饰先行词genetic mutations“基因突变”,说明此类突变的危害(会导致携带者患上严重的儿童疾病),that在该定语从句中既充当引导词,又充当主语。②分句2也是简单的主谓宾结构:句末的介宾短语according to a new study可视为插入语,补充说明整个并列句所述内容的出处。
转载请注明原文地址:https://kaotiyun.com/show/uG2Z777K
0
考研英语一
相关试题推荐
Themajortaskfacingadolescentsistocreateastableidentity.Therearesomedevelopmentaltasksthatenablethemtocreate
Sugarposesenoughhealthrisksthatitshouldbeconsideredacontrolledsubstancejustlikealcoholandtobacco,argueateam
Theideaseemssortoffoolish,justanotherexercisetrick.Standforafewminutesonaplatformthatvibrates.Getoffandtr
Thecountry’sinadequatementalhealthsystemgetsthemostattentionafterinstancesofmassviolencethatthenationhasseen
Thecountry’sinadequatementalhealthsystemgetsthemostattentionafterinstancesofmassviolencethatthenationhasseen
Psychologistshaveknownforacenturythatindividualsvaryintheircognitiveability.Butaresomegroups,likesomepeople,
Womenaremoody.Byevolutionarydesign,wearehard-wiredtobesensitivetoourenvironments,empathictoourchildren’sneed
AgoodexampleofagroupofnationsworkingtogetherforthecommongoodistheEuropeanEconomicCommunity,orthe"CommonMar
Inthelate1960s,manypeopleinNorthAmericaturnedtheirattentiontoenvironmentalproblems,andnewsteel-and-glassskysc
Ifitwereonlynecessarytodecidewhethertoteachelementarysciencetoeveryoneonamassbasisortofindthegiftedfewan
随机试题
给定程序中函数fun的功能是:将一个由八进制数字字符组成的字符串转换为与其值相等的十进制整数。规定输入的字符串最多只能包含5位八进制数字字符。例如,若输入:77777,则输出将是:32767。请改正程序中的错误,使它能得到正确结果。
A.正视眼B.近视眼C.远视眼D.老视眼E.散光6m以外的物体正好聚焦在视网膜上
可以增强磺脲类药物降血糖效应的药物包括
袋内壁刮治术一般适用于
在7~9层的中高层住宅中,一梯两户的板式住宅与塔式(点式)住宅相比.以下哪一条不是它的优点?
桥梁的五大部件包括()。
甲、乙签订融资租赁合同,甲为出租人,乙为承租人。甲根据乙的选择,向丙购买了1台大型设备,出租给乙使用。乙在该设备安装完毕后,发现不能正常运行。根据合同法律制度的规定,下列表述中,正确的是()。
为了了解高校学生对《知识产权法》基本知识的掌握程度,某教育咨询公司在一所高校内部选取了相同年级的两组学生进行了有奖测试。经阅卷分析发现:第一组学生的优秀率达到了60%,而第二组的优秀率只有20%。咨询公司据此得出结论:该校大学生在对《知识产权法》的了解和掌
MedicalJournalsMedicaljournalsarepublicationsthatreportmedicalinformationtophysiciansandotherhealthprofession
Wouldn’titbegreatifyoucouldjustlookupattheskyandreadtheweatherforecastrightaway?Well,youcan.Theforecast
最新回复
(
0
)