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
Clone Farm Factory farming could soon enter a new era of mass production. Companies in the US are developing the technology
Clone Farm Factory farming could soon enter a new era of mass production. Companies in the US are developing the technology
admin
2016-07-17
80
问题
Clone Farm
Factory farming could soon enter a new era of mass production. Companies in the US are developing the technology needed to" clone"chickens on a massive scale. Once a chicken with desirable traits has been bred or genetically engineered, tens of thousands of eggs, which will hatch into identical copies, could roll off the production lines every hour. Billions of clones could be produced each year to supply chicken farms with birds that all grow at the same rate, have the same amount of meat and taste the same.
This, at least, is the vision of the US’s National Institute of Science and Technology, which has given Origen Therapeutics of Burlingame, California, and Embrex of North Carolina $ 4. 7 million to help fund research. The prospect has alarmed animal welfare groups, who fear it could increase the suffering of farm birds.
That’s unlikely to put off the poultry industry, however, which wants disease-resistant birds that grow faster on less food. " Producers would like the same meat quantity but to use reduced inputs to get there, "says Mike Fitzgerald of Origen. To meet this demand, Origen aims to"create an animal that is effectively a clone" , he says. Normal cloning doesn’t work in birds because eggs can’t be removed and implanted. Instead, the company is trying to bulk-grow embryonic stem cells taken from fertilized eggs as soon as they’re laid. "The trick is to culture the cells without them starting to distinguish, so they remain pluripotent, " says Fitzgerald.
Using a long-established technique, these donor cells will then be injected into the embryo of a freshly laid, fertilized recipient egg, forming a chick that is a"chimera". Strictly speaking a chimera isn’t a clone, because it contains cells from both donor and recipient. But Fitzgerald says it will be enough if, say, 95 percent of a chicken’s body develops from donor cells. "In the poultry world, it doesn’t matter if it’s not 100 percent, "he says.
Another challenge for Origen is to scale up production. To do this, it has teamed up with Embrex, which produces machines that can inject vaccines into up to 50, 000 eggs an hour. Embrex is now trying to modify the machines to locate the embryo and inject the cells into precisely the right spot without killing it.
In future, Origen imagines freezing stem cells from different strains of chicken. If orders come in for a particular strain, millions of eggs could be produced in months or even weeks. At present, maintaining all the varieties the market might call for is too expensive for breeders and it takes years to bread enough chickens to produce the billions of eggs that farmers need.
Which institution has offered $4.7 million to fund the research?
选项
A、The US’s National Institute of Science and Technology.
B、Origen Therapeutics of Burlingame, California.
C、Embrex of North Carolina.
D、Animal welfare groups.
答案
A
解析
第二段共提到三个研究机构和一个民间组织。the US’s National Institute of Scienceand Technology为研究提供了经费,被资助的研究机构是Origen Therapeutics of Burlin—game,California和Embrex of North Carolina。因此,A是答案。
转载请注明原文地址:https://kaotiyun.com/show/gILd777K
本试题收录于:
职称英语理工类B级题库职称英语分类
0
职称英语理工类B级
职称英语
相关试题推荐
NaturalMedicinesSinceearliestdays,humanshaveusedsomekindsofmedicines.Weknowthisbecausehumanshavesurvived.
Themanagergotangryjustbecausehissecretarywastenminuteslate.
SomepeoplewouldliketodoshoppingonSundayssincetheyexpecttopickupwonderfularticlesinthemarket.
NewFoodsandtheNewWorldInthelast500years,nothingaboutpeople—nottheirclothes,ideas,orlanguages—haschangeda
StudySaysDogsCanSmellCancerDogsareknownfortheirsenseofsmell.Theycanfindmissingpeopleandthingslikebombs
CulturalDifferencesPeoplefromdifferentculturessometimesdothingsthatmakeeachotheruncomfortable,sometimeswithou
Sheperseveredinherideasdespiteobviousobjectionsraisedbyfriends.
Accordingtothepassage,theriskofachilddevelopinginsulin-dependentdiabetesislinkedtoallthefollowingfactorsEXCEP
ItcameassomethingofasurprisewhenDiana,PrincessofWales,madeatriptoAngolain1997,tosupporttheRedCross’scamp
ManyOlderDoctorsPlantoPhaseoutTheirPracticeTheresultsofanewsurveyindicatethat48percentofphysiciansbetween5
随机试题
简述中国古代原始宗教的社会作用。
教师上课时,一边讲授、一边板书,还要观察学生的听课情况,这属于以下哪种注意品质()
A、封闭式提问B、开放式提问C、探索式提问D、诱导式提问E、特定式提问“您现在感觉好多了吧?”此提问属于
下列各项,不属病原体致病能力的是
提高水泥的细度,可以产生()影响。
具有自办节目功能的有线电视系统前端,其视频设备的信噪比不应小于()dB。
一般资料:求助者,女性,32岁,公司职员,大学本科案例介绍:求助者在一家大型外企从事人力资源管理工作,收入较高,工作得心应手,没有量化的业绩指标压力。丈夫为某高校副教授,有一女儿3岁,健康活泼,家庭幸福。求助者对自己的生活却不满意,常常自问:“难道
下列有关文化常识的表述,不正确的一项是()。
已知微分方程y’+y=f(x),其中f(x)=求该微分方程满足y(0)=0的解.
______Jameswantedtogocampingwithhisclassmatesattheweekend,hehadtostaybehindtohelphismomdothehousework.
最新回复
(
0
)