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 recent news of the successful cloning of an adult sheep — in which the sheep’s DNA was inserted into an unfertilized sheep e
The recent news of the successful cloning of an adult sheep — in which the sheep’s DNA was inserted into an unfertilized sheep e
admin
2015-01-26
58
问题
The recent news of the successful cloning of an adult sheep — in which the sheep’s DNA was inserted into an unfertilized sheep egg to produce a lamb with identical DNA — has generated an outpouring of ethical concerns. These concerns are not about Dolly, the now famous sheep, nor even about the considerable impact cloning may have on the animal breeding industry, but rather about the possibility of cloning humans. For the most part, however, the ethical concerns being raised are exaggerated and misplaced, because they are based on erroneous views about what genes are and what they can do. The danger, therefore, lies not in the power of the technology, but in the misunderstanding of its significance.
Producing a clone of a human being would not amount to creating a " carbon copy" — an automaton of the sort familiar from science fiction. It would be more like producing a delayed identical twin. And just as identical twins are two separate people — biologically, psychologically, morally and legally, though not genetically — so to embrace a belief in genetic determinism — the view that genes determine everything about us, and that environmental factors or the random events in human development are utterly insignificant. The overwhelming consensus among geneticists is that genetic determinism is false.
As geneticists have come to understand the ways in which genes operate, they have also become aware of the myriad ways in which the environment affects their "expression". The genetic contribution to the simplest physical traits, such as height and hair color, is significantly mediated by environmental factors. And the genetic contribution to the traits we value most deeply, from intelligence to compassion, is conceded by even the most enthusiastic genetic researchers to be limited and indirect. Indeed, we need only appeal to our ordinary experience with identical twins — that they are different people despite their similarities — to appreciate that genetic determinism is false.
Furthermore, because of the extra steps involved, cloning will probably always be riskier — that is, less likely to result in a live birth — that in vitro fertilization(IVF)and embryo transfer. For example, it took more than 275 attempts before the researchers were able to obtain a successful sheep clone. While cloning methods may improve, we should note tat even standard IVF techniques typically have success rate of less than 20 percent. So why would anyone go to the trouble of cloning?
What are examples of genetic contribution?
选项
A、Hair and eye color.
B、A child’s attitude towards their parents.
C、A person’s values.
D、Fashion style.
答案
A
解析
事实细节题。信息定位在文章第三段“the genetic contribution to the simplest physical traits,suchas height and hair color”,由此可知,基因只会影响一些最简单的躯体性状。选项A中的hair andeye color都是一些基本的躯体性状。故答案为A。
转载请注明原文地址:https://kaotiyun.com/show/43LO777K
0
考博英语
相关试题推荐
AbudgetapprovedbytheEuropeanParliamentfortheEuropeanEconomicCommunitywasdeclaredadoptedTuesdaydespiteopposition
Theamazingsuccessofhumansasa【1】istheresultoftheevolutionarydevelopmentofourbrainswhichhasled,amongotherthin
Theamazingsuccessofhumansasa【1】istheresultoftheevolutionarydevelopmentofourbrainswhichhasled,amongotherthin
Theamazingsuccessofhumansasa【1】istheresultoftheevolutionarydevelopmentofourbrainswhichhasled,amongotherthin
Ifthenationalpastimecouldbeintegrated,itseemedonlyamatteroftimebeforethenation’sschools,playgrounds,buses,andre
Whatissospecialaboutintuitivetalent?Extensiveresearchonbrainskillsindicatesthatthosewhoscoreashighlyintuitive
Oneofthemanytheoriesaboutalcoholismisthelearningandreinforcementtheory/whichexplainsalcoholismbyconsideringalco
Althoughthespeakerwasawell-knownpersonality,hisspeechwaspoorly_____.
Herspirits______atthethoughtofalltheworkshehadtodothatmorning.
Mountainbikingdemandshill—walkingstrengthaswellastrack-ridingskills.Initially,choosegentleroutesamongfamiliart
随机试题
负压吸宫术中出血多少可诊断为人工流产术时出血,下列选项正确的是
A.现况研究B.筛检C.疾病监测D.病例对照研究E.实验研究研究中需将研究对象随机分组的研究方法是
肾阴虚型经间期出血,方选阴虚血热型经期延长,方选
病毒性肝炎时,肝细胞的灶性坏死属于哪种病理变化
A市某化学制品公司如因货物损失对B市某运输公司提起诉讼,如果双方在合同中约定管辖法院,下列约定法院符合法律规定的是()人民法院。如果A市某化学制品公司向法院起诉,B市运输公司应诉答辩后在庭审中主张双方签订合同时曾签有仲裁协议,双方约定由C仲裁委员会
根据《劳动法》及相关规定,用人单位在休息日安排劳动者工作又不能安排补休的,应当支付不低于工资的()的工资报酬。
(1)看到节目预告(2)受到妻子抱怨(3)转换电视频道(4)与同事一起侃球赛(5)孩子无法入睡
一项实验证明,各种软饮料中的人造糖精,在摄人一定量后,对老鼠有致癌作用。但要吸收能对老鼠产生致癌作用的人造糖精,一个人一天必须喝25罐软饮料。因此,各种软饮料中的人造糖精通常对人的健康无害。以下哪项是上述论证所必须假设的?
在关系运算中,投影运算的含义是
A、Raisetheireyebrows.B、Interpretthewordsonthescript.C、Benotaffectedbyanythingonthescript.D、Beenthusiasticabou
最新回复
(
0
)