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
Traditional plant breeding involves crossed varieties of the 【M1】______ same species in ways they could cross naturally. For exa
Traditional plant breeding involves crossed varieties of the 【M1】______ same species in ways they could cross naturally. For exa
admin
2015-02-17
72
问题
Traditional plant breeding involves crossed varieties of the 【M1】______
same species in ways they could cross naturally. For example,
disease-resistant varieties of wheat have been crossed with
highly-yield wheat to combine these properties. This type of 【M2】______
natural gene exchange is safe and fairly unpredictable. 【M3】______
Genetic engineering(GE)involves exchanging genes between
unrelated species that cannot naturally exchange genes with each
other. GE can involve the exchange of genes between vastly
different species, e. g. putting scorpion toxin genes into maize or
fish antifreeze genes into tomatoes. It is possible that a scorpion
toxin gene, even when it is in maize DNA, will still get the
organism to produce scorpion toxin — but what other effects may 【M4】______
have on this alien environment? We are already seeing this 【M5】______
problem — adding human growth hormone genes to pigs certainly
makes them grow — but it also gives them arthritis and makes them
cross-eyed, that was entirely unpredictable. 【M6】______
It will be obvious, for example, that gene for human 【M7】______
intelligence will not have the same effect if inserted into cabbage as 【M8】______
it had in human DNA — but what side-effect would it have? In
other word, is GM(Genetically Modified)food safe to eat? The 【M9】______
answer is that nobody knows because long-term tests have not been
carried out.
The current position of the UK Government is that "There is
no evidence of long-term dangers from GM food." In the US, the 【M10】______
American Food and Drug Administration is currently being
prosecuted for covering up research that suggested possible risks
from GM foods.
【M8】
选项
答案
cabbage∧一DNA
解析
概念混淆。从本句的后半部分来看,控制人类智力的基因并不是直接被注入白菜中,而是被加入白菜的DNA中,因此这个DNA不可省。
转载请注明原文地址:https://kaotiyun.com/show/LOdO777K
0
专业英语八级
相关试题推荐
NewresearchfromtheUnitedStatessuggeststhatthemillennia-oldtherapyofyogacouldbenefitmillionsofpeoplewhosuffe
Roadrage,officerage,andevenrelationshipragearefamiliartous.Butnowidlenessragehasemerged.FrequentlyIhearpeo
Amongalmostsevenhundredspeciesofbamboo,somearefullygrownatlessthanafoothigh,whileothercangrowthreefeetin
Attheturnofthe20thcentury,DutchphysicianChristiaanEijkmanshowedthatdiseasecanbecausednotonlybymicroorganism
Whichofthefollowingismentionedasthegovernment’smeasuretocontrolinflation?
InEnglishalltheprefixesare______morphemes.
"Howloveisborn,"saidAlehin,"whyPelageadoesnotlovesomebodymorelikeherselfinherspiritualandexternalqualities,
Thepopularnotionaboutmarriageandloveisthattheyaresynonymous,thattheyspringfromthesamemotives,andcoverthes
______isNOTanovelbytheBrontesisters.
随机试题
关于大理石特征的说法,正确的有()。
联结人与自然界的中介是
有关溶血反应的治疗,应采取的措施包括
急性梗阻性化脓性胆管炎的表现是
()不在区位分析的范围内。
0,2,2,4,6,( )
一间宿舍可住多个学生,则实体宿舍和学生之间的联系是()。
为了使标签控件在显示其内容时不覆盖其背景内容,需进行设置的属性为
在窗体上画一个名称为Command1的命令按钮,并编写如下事件过程:PrivateSubCommandl_Click()x=1s=0Fori=1To5x=x/iS=S+XNext
We’veallhadtostartconversationsthatwedreadedhaving—everythingfromaskingforaraisetoaskingforadivorcetoaski
最新回复
(
0
)