首页
登录
职称英语
"Successful cloning of an increasing number of species confirms the general impr
"Successful cloning of an increasing number of species confirms the general impr
游客
2024-08-06
10
管理
问题
"Successful cloning of an increasing number of species confirms the general impression that it would be possible to clone any mammalian species, including humans," said Ian Wilmut, a reproductive biologist at the University of Edinburgh who produced the first cloned mammal, Dolly the sheep, from an adult cell nearly a decade ago. Researchers have since cloned cats, goats, cows, mice, pigs, rabbits, horses, deer, mules and gaur, a large wild ox of Southeast Asia. So far, efforts to clone a monkey or another primate with the same techniques have failed. Uncertainties about the health and life span of cloned animals persist: Dolly died prematurely in 2003 after developing cancer and arthritis.
选项
答案
爱丁堡大学生殖生物学家伊恩-维尔莫特称:“越来越多的物种被成功克隆使人们确信:所有哺乳动物,包括人类本身,都是可能被克隆的。”维尔莫特是第一个克隆哺乳动物的科学家,大约10年前他成功利用成体细胞克隆了绵羊多莉。此后研究人员相继克隆了猫、山羊、牛、老鼠、猪、免予、马、鹿、骡及白肢野牛(东南亚地区一种大野牛)。但迄今为止,用同样方法克隆猴子或其他灵长类动物的尝试均告失败。克隆动物的健康状况及寿命也仍然存在不确定性:绵羊多莉2003年就因患癌症及关节炎夭亡。
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3708337.html
相关试题推荐
Whichnumbershouldcomenextinthisseries?25,24,22,19,15,?[img]2012q2/c
Inasupermarket,theaislesarenumberedonetosixfromtheentrance.Washing
通常,美国文学这门课在一个学年内学完。(spreadover)Generallyspeaking,thecourseinAmericanLitera
Fillinthemissingnumbersinthissequence:15873×7=11111115873×14=222222
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
Lookatthedrawing.Thenumbersalongsideeachcolumnandrowarethetotalof
Whatisthenumberthatisonehalfofonequarterofonetenthof400?51/10of
随机试题
FrequentbusinesstravelerJoyceGioiaforgotmorethan$20000worthofje
1.题目:家庭电流过大的原因 2.内容: 3.基本要求: (1)讲
C线圈串联时,自感相加,顺向串联则两电感的耦合是助磁效果,互感相加。
患者,女性,73岁。右肺下叶腺鳞癌术后,明日拟出院。护士嘱咐患者必须尽快返院就诊
从长期来看,影响公司产品竞争能力水平的主要因素有()。 ①产品市场的供求关系
麻黄的人药部位是A.肉质茎B.带叶茎枝C.草质茎D.全草E.根
影响少年儿童品德形成的因素有很多,其中起主导作用的因素是( )。A.遗传 B
能进行糖异生的器官是 A.小肠B.肝C.肌肉D.肾
违反治安管理行为者,情节轻微,并能及时改正或者主动承认错误的,可以减轻或免予处罚
赵家庄乡下辖3个行政村,分别是A村、B村、C村。2019年年末,该乡“村集体经济
最新回复
(
0
)