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
The study of genetics has given rise to a profitable new industry called biotechnology. As the name suggests, it blends biology
The study of genetics has given rise to a profitable new industry called biotechnology. As the name suggests, it blends biology
admin
2013-05-29
78
问题
The study of genetics has given rise to a profitable new industry called biotechnology. As the name suggests, it blends biology and modem technology through such techniques as genetic engineering. Some of the new biotech as they are called, specialize in agriculture and are working enthusiastically to patent seeds that give a high yield, that resist disease, drought, and frost, and that reduce the need for hazardous chemicals. If such goals could be achieved, it would be most beneficial. But some have raised concerns about genetically engineered crops.
"In nature, genetic diversity is created within certain limits," says the book Genetic Engineering, Food, and Our Environment. "A rose can be crossed with a different kind of rose, but a rose will never cross with a potato. Genetic engineering, on the other hand, usually involves taking genes from one species and inserting them into another in an attempt to transfer a desired property or character. This could mean, for example, selecting a gene which leads to the production of a chemical with antifreeze properties from an arctic fish, and joining it into a potato or strawberry to make it frost-resistant. It is now possible for plants to be engineered with genes taken from bacteria, viruses, insects, animals or even humans." In essence, then, biotechnology allows humans to break the genetic walls that separate species.
Like the green revolution, what some call the gene revolution contributes to the problem of genetic uniformity—some say even more so because geneticists can employ techniques such as cloning and tissue culture, processes that produce perfectly identical copies, or clones. Concerns about the erosion of biodiversity, therefore, remain. Genetically altered plants, however, raise new issues, such as the effects that they may have on us and the environment. "We are flying blindly into a new era of agricultural biotechnology with high hopes, few constraints, and little idea of the potential outcomes," said science writer Jeremy Rifkin.
According to the author with of biotechnology______.
选项
A、the species of creatures will be reduced
B、our living environment will be better than it is now
C、humans will pay for its side effect
D、we will suffer from fewer and fewer diseases
答案
C
解析
从最后一段倒数第二句可以看出,随着生物技术发展,人类会为其负面效应付出代价。
转载请注明原文地址:https://www.kaotiyun.com/show/WEHO777K
0
研究生英语学位课统考(GET)
相关试题推荐
Tosaythatthechildlearns【C1】______imitationandthatthewaytoteachistosetagoodexampleoversimplifies.Nochildimit
Whyaresomanypeopleunhappyintheirjobs?Therearetwoprimaryreasons.First,somepeopleareconvincedthatearningaliv
Thethieves______thewastepaperallovertheroomwhiletheyweresearchingforthediamondring.
It______withoutsayingthatconsumerswouldbehappierifpriceswerelower.
Agreatdealofattentionisbeingpaidtodaytotheso-calleddigitaldivide—thedivisionoftheworldintotheinfo(informatio
Thingshavereallychanged.Notonlyisthemilitarystandingtallagain,itisstagingaremarkablecomebackinthequantityan
Exceptionalchildrenaredifferentinsomesignificantwayfromothersofthesameage.Forthesechildrentodeveloptotheirf
Thereareincreasinglyfraughtrelationshipsthatadultsarehavingwithchildren—inallwalksoflife,fromthepoliceandpoli
Today,thecomputerhastakenupappliancestatusinmorethan42percentofhouseholdsacrosstheUnitedStates.Andthesecomp
ThemostthoroughlystudiedintellectualsinthehistoryoftheNewWorldaretheministersandpoliticalleadersofseventeenth
随机试题
简述急性左心衰的治疗。
教师应该具备的道德素养有哪些?
A、获得定点资格的中医医疗机构B、中医药人员培训规划C、中医药专业技术职务任职资格评审D、与中医药有关的评审或者鉴定活动E、非营利性中医医疗机构应当按照规定向参保人员提供基本医疗服务的是
诚信税务师事务所在2015年4月全国税法宣传月期间,免费为广大纳税人提供税务咨询服务,现有企业财务人员咨询下列问题,请分别予以回答。要求:为了促进企业发展,财政部和国家税务总局出台了固定资产加速折旧政策,对于符合政策规定的企业,是否都应该选择
甲公司委派业务员张某去乙公司采购大蒜,张某持盖章空白合同书以及采购大蒜授权委托书前往乙公司。乙公司于2010年3月1日签订大蒜买卖合同,约定由乙公司代办托运,货交承运人丙公司后即视为完成交付。大蒜总价款为100万元,货交丙公司后,甲公司付50万元货款,货到
为深入推进党风廉政建设和反腐败斗争,全面开展从严治党,党中央从各方面制定和采取了多种重大举措,下列不属于这些举措的是()。
“安不忘危,存不忘亡,治不忘乱”启示我们矛盾的主要方面决定事物的性质。()
J2EE规范包含一系列技术规范,其中()实现应用中关键的业务逻辑,创建基于构件的企业级应用程序,如进行事务管理、安全运行远程客户连接、生命周期管理和数据库连接缓冲等中间层服务的应用程序。
Thebehaviorofindividualsisinfluencedbyheredity,environmentandculture.Cultureincludesrulesof(31)anindividualis
Alcohol-controladvocatesarguethattelevisionadvertisingplaysalargeroleinleadingteenagerstodrink.InHungary,howeve
最新回复
(
0
)