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
2012-12-22
32
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, 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
第二段开始就提到: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.因此答案选A。
转载请注明原文地址:https://kaotiyun.com/show/1fUd777K
本试题收录于:
职称英语综合类A级题库职称英语分类
0
职称英语综合类A级
职称英语
相关试题推荐
PlantsinDesertOnlyspecialplantscansurvivetheterribleclimateofadesert,fortheseareregionswheretheannualra
PlantsinDesertOnlyspecialplantscansurvivetheterribleclimateofadesert,fortheseareregionswheretheannualra
MusicalTrainingCanImproveCommunicationSkillsAmericanscientistssaymusicaltrainingseemstoimprovecommunicationsk
AIngvarKamprad-abornbusinessmanBSuccessbroughtbytheintroductionofshowroomsCTheoriginofIKEADSpecializationi
Accordingtothepassage,parentsshouldhelptheirchildrenwiththeirhomework.Childrenshouldalwaystakeabookwiththem
InthesecondparagraphtheauthorthinksthatWhichofthefollowingstatementsisINCORRECT?
Weknowforsurethatcolonizationbeganattheendofthe15thcentury.AmongtheearlysettlersinSouthAmericainthe16th
HowtoGetalongWellwithYourBoss1.Beforeyouarguewithyourboss,checkwiththeboss’ssecretarytodeterminehismood
Adeadlydiseasehasaffectedtheseanimals.
Shereadapoemwhichdepictsthesplendorofthesunset.
随机试题
下列哪些不属于行政诉讼的受案范围?()
后期法家的主张有_______、_______。
∫xcosx2dx=
使金黄色葡萄球菌感染局限化的是
背景资料:某桥为20m+3×25m+20m钢筋混凝土连续箱梁桥,施工单位采用满堂式钢管支架现浇混凝土。为防止支架变形,按要求设置支架斜撑和横撑;选用了优质钢模,采取多种固定模板的措施。由于浇筑混凝土时正值高温,合理控制混凝土水灰比。混凝土浇筑拆模
根据个人所得税法的相关规定,下列各项中,按年计征个人所得税的有()。
某企业本月生产甲、乙两种产品,其中甲产品技术工艺过程较为简单,生产批量较大;乙产品工艺过程较为复杂,生产批量较小。其他有关资料见下表:假设经作业分析,该企业根据各项作业的成本动因性质设立了机器调整准备、质量检验、设备维修、生产订单、材料订单、生产协调等
题目随着现代农业的发展,“土地流转”这一经营方式逐渐掀起改革浪潮,也在改变着人们的农业生产理念和生活方式。假如你是某市政府相关工作人员,根据“给定资料1~2”,给基层政府拟写一份开展土地流转工作的通知。要求:(1)只写标题和正
Instinctisusuallydefinedasthefacultyofactinginsuchawayastoproducecertainends,withoutforesightoftheends,an
PASSAGEONEWhendidtheconceptof"totalwar"originate?
最新回复
(
0
)